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The Mitutoyo 552 series Digimatic carbon fiber calipers are digital calipers made of Carbon Fiber Reinforced Plastics (CFRPs), and use Mitutoyo’s ABSOLUTE linear encoder technology. Centerline, pointed inside diameter (ID) measuring, and attachment clamp accessories are available for expanded range of use. These calipers have accessible function control buttons, such as Origin-set, Zero-setting, Presetting, Offsetting, Data Hold, Inch/Metric, and Data Output, and uses both inch and metric measuring systems. Although identical to dial and vernier calipers in its ability to make precise measurements, the digital caliper’s LCD increases reading reliability.

The Mitutoyo 552 series caliper has the ABSOLUTE electrostatic capacitance type linear encoder to help reduce overspeed errors. The caliper employs Carbon Fiber Reinforced Plastics (CFRPs) in its beam and jaws. LCD resolution is 0.0005" (0.01mm). An alarm alerts the user to low voltage and counting value composition errors. An adjustable thumbscrew locks the scale’s position. Maximum response speed is 1,600 mm/s. 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 an SPC cable. The caliper includes, and is powered by, a single SR44 silver oxide cell battery that lasts approximately 3,000 hrs. with normal use. Optional caliper attachments include millimeter and inch centerline attachments, millimeter and inch pointed ID measuring attachments, and attachment clamps (sold separately).

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.