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The Brown & Sharpe Dial-Cal dial caliper has a 1.25" diameter rotating dial with a lock, is made of stainless steel, and measures in inches. The covered rack helps prevent measurement error by protecting the gear from foreign matter. Linear accuracy meets Deutsches Institut für Normung (DIN) 862 standards. These calipers are for use in measuring inside dimensions (ID), outside dimensions (OD), depth and step.
The caliper measures 0.100" per revolution of the dial. The lock screw locks the dial and holds the sliding jaw in position. Adjustable zero set allows the user to set zero at a convenient distance. The depth rod is integrated into the rack of the caliper, unlike many calipers that offer a detachable depth rod, or none at all. The hardened stainless steel components, including the bar, measuring surfaces, rack, gears, and depth rod, offer corrosion resistance, increased accuracy, and long life. Spring anti-backlash control offers increased accuracy over standard gear configurations. Backlash is the amount of clearance between mated gear teeth in the caliper controls, which prevents the gear teeth from jamming. It is undesirable to have much backlash due to the lack of precision offered by the increased amount of play between gears. Certain gear designs can minimize or eliminate backlash; spring anti-backlash systems use a spring to add a compressive force, thereby minimizing backlash.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
Brown & Sharpe manufactures precision measuring equipment and metrology hand tools. The company, founded in 1833, played a key role in setting industrial standards in the United States. Brown & Sharpe was acquired by Hexagon Metrology in 2001 and is headquartered in North Kingstown, RI.
The Mitutoyo 500 series Super Caliper is a solar-powered digital caliper made of durable hardened stainless steel using Mitutoyo’s ABSOLUTE linear encoder technology. Its impact-resistant display increases durability and IP67 protection ensures waterproof reliability. These calipers have no need for origin setup and can be used in any location, including dimly lit areas, and can be operated without replacing batteries.
Although identical to dial and vernier calipers in their ability to make precise measurements, these digital solar calipers also have an LCD that displays in metric units, increasing reading reliability. In environments with available light of 60 Lux or more, the caliper becomes active even it its uncharged state; it can immediately start measuring without zero resetting and operating speed is unrestricted.
The 500 series of Super Caliper has the ABSOLUTE electromagnetic induction linear encoder to help prevent overspeed errors. It measures outside diameter (OD), inside diameter (ID), depth, and step, where the butt end of the fixed jaw measures one end of a work piece before its upper/lower or inner/outer "steps" are measured. LCD resolution is 0.01 mm, repeatability is 0.0005”/0.01 mm, and accuracy is rated + or - 0.02 mm. It is Ingress Protection 67 (IP67)-certified, which means that the electronic components are resistant to debris and to submersion in liquid under standard conditions for up to 30 minutes. An alarm alerts the user to counting value composition errors. A rolling thumbwheel makes fine adjustments and a thumbscrew locks the scale’s position. Response speed is unlimited. The caliper can be used continuously above 60 Lux ambient illumination. The built-in solar cells can store energy for up to one hour of caliper operation in 50 Lux light.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.
The Mitutoyo 500 series Super Caliper is a solar-powered digital caliper made of durable hardened stainless steel using Mitutoyo’s ABSOLUTE linear encoder technology. Its impact-resistant display helps increase durability and IP67 protection helps ensure waterproof reliability. These calipers have no need for origin setup and can be used in any location, including dimly lit areas, and can be operated without replacing batteries.
Digital solar calipers have an LCD that displays in inch or metric units, to help increase readability. In environments with available light of 60 Lux or more, the caliper can immediately start measuring, even uncharged, without zero resetting, and operating speed is unrestricted.
The 500 series of Super Caliper has the ABSOLUTE electromagnetic induction linear encoder to help prevent overspeed errors. It measures outside diameter (OD), inside diameter (ID), depth, and step, where the butt end of the fixed jaw measures one end of a work piece before its upper/lower or inner/outer "steps" are measured. LCD resolution is 0.01 mm, repeatability is 0.0005”/0.01 mm, and accuracy is rated + or - 0.02 mm. It is Ingress Protection 67 (IP67)-certified, which means that the electronic components are resistant to debris and to submersion in liquid under standard conditions for up to 30 minutes. An alarm alerts the user to counting value composition errors. A rolling thumbwheel makes fine adjustments and a thumbscrew locks the scale’s position. Response speed is unlimited. The caliper can be used continuously above 60 Lux ambient illumination. The built-in solar cells can store energy for up to one hour of caliper operation in 50 Lux light.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.
The Mitutoyo 500 series solar-powered Absolute Digimatic caliper is a digital caliper made of hardened stainless steel and uses Mitutoyo’s ABSOLUTE linear encoder technology. Hard-coated solar panels protect the solar cells storing energy for operation. These calipers can be used in any location, including dimly lit areas, and can be operated without replacing batteries.
Although identical to dial and vernier calipers in their ability to make precise measurements, these digital solar calipers also have an LCD that displays in inch or metric units, increasing reading reliability. In environments with available light of 60 Lux or more, the caliper becomes active even it its uncharged state; it can immediately start measuring without zero resetting and operating speed is unrestricted.
The 500 series solar-powered Absolute Digimatic Caliper has the ABSOLUTE electromagnetic induction linear encoder to help prevent overspeed errors. It measures outer diameter (OD), inner diameter (ID), depth, and step, where the butt end of the fixed jaw measures one end of a work piece before its upper/lower or inner/outer "steps" are measured. LCD resolution is 0.01 mm, repeatability is 0.0005”/0.01 mm, and accuracy is rated + or - 0.02 mm. A Digital LCD Data Reading Hold function is available with the optional Data Hold Unit (sold separately). An alarm alerts the user to low voltage, scale contamination, and counting value composition errors. A rolling thumbwheel makes fine adjustments and a thumbscrew locks the scale’s position. Response speed is unlimited. The caliper can be used continuously above 60 Lux ambient illumination. The built-in solar cells can store energy for up to three hours of caliper operation. The caliper can be used continuously above 60 Lux ambient illumination.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.
The Mitutoyo 500 series ABSOLUTE Coolant Proof Caliper is a dust and water resistant digital caliper made of durable hardened stainless steel using Mitutoyo’s ABSOLUTE linear encoder technology. This caliper conforms to IP67 protection levels enabling it to operate in workshop conditions exposed to water, dust, coolant, or oils.
Although identical to dial and vernier calipers in its ability to make precise measurements, the digital caliper has an LCD that displays in inch and metric units which increases reading reliability, and reflects all ABSOLUTE system activities. This digital caliper has accessible function control buttons, such as Origin to set and retain the original measuring point, On/Off to automatically shut off the caliper after 30 minutes, and Zero/ABS (Absolute Scale) to zero-set the LCD display. The Absolute Scale (ABS) function tracks the set origin point, even after shutoff. Once on again, the caliper can immediately start measuring, without zero resetting. The LCD can be "zeroed out" before making and comparing incremental measurements without having to subtract the first measurement from the second.
The 500 series ABSOLUTE Coolant Proof Caliper has the ABSOLUTE electromagnetic induction linear encoder to help prevent overspeed errors. It measures outer diameter (OD), inner diameter (ID), depth, and step, where the butt end of the fixed jaw measures one end of a work piece before its upper/lower or inner/outer "steps" are measured. LCD resolution is .0005" (0.01mm), and repeatability is .0005" (0.01mm). Dust/water protection level is Ingress Protection 67 (IP67)-certified, which means that the electronic components are resistant to debris and to submersion in liquid under standard conditions for up to 30 minutes. An alarm alerts the user to low voltage and counting value composition errors. A rolling thumbwheel makes fine adjustments and a thumbscrew locks the scale’s position. Response speed is unlimited. Each caliper includes, and is powered by, one SR44 silver oxide cell battery that lasts approximately 3 years with normal use.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.
The Mitutoyo 551 series ABSOLUTE Digimatic caliper is a digital caliper that is made of durable hardened stainless steel, uses Mitutoyo’s ABSOLUTE linear encoder technology, and has both standard and nib style jaws. These calipers have accessible function control buttons, such as Origin-set, Zero-setting, Inch/Metric, and Data Output, and uses both inch and metric measuring systems. Although identical to dial and vernier calipers in their ability to make precise measurements, the digital caliper’s LCD increases reading reliability.
The caliper has the ABSOLUTE electrostatic capacitance linear encoder to help prevent overspeed errors. Standard upper jaws measure outer diameter (OD), while the lower rounded nib-style jaws measure inner diameter (ID). Nib-style jaws are suitable for grasping round and spherical-shaped instruments to gauge and provide clear readings up to the maximum level of accuracy. In making inside diameter (ID) measurements, the round outside surface of each ID nib fits closely against curve of the inside surface being measured. The caliper has Statistical Process Control (SPC) data output capability; it outputs data using a serial data interface to a computer or other dedicated recording device using SPC cable with data switch (sold separately). The caliper includes, and is powered by, a single SR44 silver oxide cell battery that lasts approximately 3.5 years with continuous normal use.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.
The Mitutoyo 505 series dial caliper uses a combination of a vernier scale and a dial whose pointer travels one rotation for each 0.1” measured to perform precise outside diameter (OD), inside diameter (ID), depth, and step measurements.
The dial caliper has a fixed (main) scale and a movable dial, unlike the vernier caliper which has a second, movable vernier scale. The dial is circular and has a pointer; it is mounted on a toothed gear track which drives the pointer. As the dial moves over the main scale rule, the pointer rotates once to give the additional fractional reading. The second measurement is added to the main scale reading to obtain a final result accurate to the smallest graduation marked on the dial. The main scale and dial are marked in inches. The dial can be rotated beneath the pointer to measure size differential between two objects. The dial caliper is easier to read than the vernier caliper, thus safeguarding against user reading errors. Its standard of precise measurement complements the use of the vernier caliper; the dial provides an ease in reading and interpolating measurements which most vernier calipers, due to their need for direct observation of both scales, may not provide.
The dial uses a rack-and-pinion mechanism and is mounted on a gear track where each tooth equals one quarter of the dial revolution, and four teeth equal 0.1”. The smooth-moving dial is graduated to 0.001” and offers gear train shock protection. A thumbwheel permits fast operation with one hand. A clamping screw controls scale movement and a dial calibration lock holds the sliding jaw’s position. The caliper is made of hardened stainless steel construction with titanium nitride (TiN) coating on the beam wear surface helps extend caliper life. Two sets of jaws provide four-way measurement capability: outside dimension (OD), inside dimension (ID), depth, and step, where the butt end of the fixed jaw measures one end of a work piece before its upper/lower or inner/outer steps are measured.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.
The Mitutoyo 505 series dial caliper uses a combination of a vernier scale and a dial with a pointer that travels one rotation for each 0.2” measured to perform precise outside dimension (OD), inside dimension (ID), depth, and step measurements.
The dial caliper has a fixed (main) scale and a movable dial, unlike the vernier caliper which has a second, movable vernier scale. The dial is circular and has a pointer; it is mounted on a toothed gear track which drives the pointer. As the dial moves over the main scale rule, the pointer rotates once to give the additional fractional reading. The second measurement is added to the main scale reading to obtain a final result accurate to the smallest graduation marked on the dial. The main scale and dial are marked in inches. The dial can be rotated beneath the pointer to measure size differential between two objects. The dial caliper is easier to read than the vernier caliper, thus safeguarding against user reading errors. Its standard of precise measurement complements the use of the vernier caliper; the dial provides an ease in reading and interpolating measurements which most vernier calipers, due to their need for direct observation of both scales, may not provide.
The dial uses a rack-and-pinion mechanism and is mounted on a gear track where each tooth equals one quarter of the dial revolution, and four teeth equal 0.2”. The smooth-moving dial is graduated to 0.001” and offers gear train shock protection. A thumbwheel permits fast operation with one hand. A clamping screw controls scale movement and a dial calibration lock holds the sliding jaw’s position. The caliper is made of hardened stainless steel construction with titanium nitride (TiN) coating on the beam wear surface helps extend caliper life. Two sets of jaws provide four-way measurement capability: outside dimension (OD), inside dimension (ID), depth, and step, where the butt end of the fixed jaw measures one end of a work piece before its upper/lower or inner/outer steps are measured.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.
The Starrett master vernier caliper measures in inches with 0.0005" accuracy and 0.001" graduations in black on the no-glare, satin chrome-finished bar. The vernier scales are longer than normal, with 50 divisions, allowing half as many bar graduations as conventional single-vernier tools. These widely-spaced graduations allow readability of measurements. This caliper is suitable for taking inside dimension (ID) and outside dimension (OD) measurements.
The open-face design of the slide allows both the inside and outside vernier scales to be indicated on the same side, allowing both inside and outside measurements to be read without turning the tool over. The screw-type adjusting nut allows for fine measurement adjustments for accuracy, while the lock nut holds measurements for reading, repeating, or transferring the measurement. The tool steel construction makes the jaws harder and more wear-resistant than an equivalent stainless steel jaw. The bars are hardened and stabilized. The measuring surfaces are hardened, ground, and lapped, for a very hard, flat, and polished measuring surface that is considerably more accurate than a surface that has not had these operations performed. The graduations on the bar are machine-divided for accuracy. The master bar’s combination of straight and angular ways allow positive alignment of graduations, and easy adjustment of the flush-fitting verniers. Aligning flush vernier plate graduations to the same plane as the graduations on the bar ensures readability and accuracy. This caliper has divider points on the back side to help accurately set dividers and machine parts. This caliper has inch and millimeter graduations on the same bar, so outside measurements can be taken easily, while inside measurements must be compensated for by adding the nib width to the indicated reading. The longer length of the adjusting jaw slide provides a longer bearing surface on the master bar, which ensures that the bar and solid jaw are square. This longer bearing surface also means the caliper has additional stiffness for resistance to springing and therefore, more accurate measurements. Tight, smoothly fitted slides offer a high level of accuracy along with simplicity of adjustment.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
The L. S. Starrett Company was founded in 1880, originally manufacturing bench vises, squares, and other tools. They acquired other companies throughout the years, expanding their services into making precision measurement instruments and tools, such as calipers, micrometers, saw blades, and gauges. Starrett is headquartered in Athol, Massachusetts and has manufacturing facilities in Brazil, the United Kingdom, China, and other locations.
The Starrett master vernier caliper measures in inches and metric with 0.0005"/0.01mm accuracy and 0.001"/0.02mm graduations in black on the no-glare, satin chrome-finished bar. The vernier scales are longer than normal, with 50 divisions, allowing half as many bar graduations as conventional single-vernier tools. These widely-spaced graduations allow readability of measurements. This caliper is suitable for taking inside dimension (ID) and outside dimension (OD) measurements.
The open-face design of the slide allows both the inside and outside vernier scales to be indicated on the same side, allowing both inside and outside measurements to be read without turning the tool over. The screw-type adjusting nut allows for fine measurement adjustments for accuracy, while the lock nut holds measurements for reading, repeating, or transferring the measurement. The tool steel construction makes the jaws harder and more wear-resistant than an equivalent stainless steel jaw. The bars are hardened and stabilized. The measuring surfaces are hardened, ground, and lapped, for a very hard, flat, and polished measuring surface that is considerably more accurate than a surface that has not had these operations performed. The graduations on the bar are machine-divided for accuracy. The master bar’s combination of straight and angular ways allow positive alignment of graduations, and easy adjustment of the flush-fitting verniers. Aligning flush vernier plate graduations to the same plane as the graduations on the bar ensures readability and accuracy. This caliper has divider points on the back side to help accurately set dividers and machine parts. This caliper has inch and millimeter graduations on the same bar, so outside measurements can be taken easily, while inside measurements must be compensated for by adding the nib width to the indicated reading. The longer length of the adjusting jaw slide provides a longer bearing surface on the master bar, which ensures that the bar and solid jaw are square. This longer bearing surface also means the caliper has additional stiffness for resistance to springing and therefore, more accurate measurements. Tight, smoothly fitted slides offer a high level of accuracy along with simplicity of adjustment.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
The L. S. Starrett Company was founded in 1880, originally manufacturing bench vises, squares, and other tools. They acquired other companies throughout the years, expanding their services into making precision measurement instruments and tools, such as calipers, micrometers, saw blades, and gauges. Starrett is headquartered in Athol, Massachusetts and has manufacturing facilities in Brazil, the United Kingdom, China, and other locations.
The Starrett 798B series of digital caliper has two sets of jaws for measuring inside dimension (ID) and outside dimension (OD) with resolution to 0.0005” (0.01 mm), an LCD that displays in inches or metric with 0.310" high characters for readability, and an induction-type linear encoding system to help promote high precision measurement. This caliper is IP67-rated, which means that the electronic components are resistant to debris, and are resistant to submersion under standard conditions for up to 30 minutes.
The caliper can be used with one hand through operating the fine adjustment roll with the thumb. A lock screw can hold the slide in position. The hardened stainless steel measuring surfaces offer corrosion resistance and long life, while the bar and slide are a 3.5-mm thick. An induction-type linear encoder system offers high precision in measurements by tracking small movements in position by using a conductor moving through a magnetic field. The caliper supports data output to a computer for statistical process control (SPC) through a non-contact interface cable (sold separately). The CR2032 battery is easy to access, on the front of the plastic casing, next to the LCD. The last measurement position is retained when the caliper is shut off, and the caliper may be zero-set at any position with the clearly marked zero button. The caliper shuts off automatically after 30 minutes of inactivity. Linear accuracy meets the internationally used Deutsches Institut fur Normung 862 (DIN 862): Vernier Calipers Requirements and Testing standards.
Calipers measure the distance between two opposing sides of an object. They make inside, outside, depth, or step measurements, according to their type. Calipers are commonly used in architecture, metalworking, mechanical engineering, and machining. The simplest calipers have two legs to mark the two points and require a ruler to take the measurement. More complex calipers use two sets of jaws instead of legs and have up to two graduated scales. Vernier, dial, and digital calipers give direct and accurate readings and are functionally identical, having a calibrated scale with a fixed jaw, and another jaw with a movable pointer that slides along the scale. The vernier caliper has a scale sliding parallel to the main scale for an additional, fractional reading to improve measurement precision. The dial caliper has a circular dial with a pointer on a toothed gear rack replacing the second vernier scale. As with the vernier, this second measurement is added to the reading from the main scale to obtain the result. The digital caliper takes a differential by zeroing the display at any point along the slide, with an LCD that displays a single value in English and/or metric units.
The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company was founded in 1880 and is headquartered in Athol, MA.