Mitutoyo 959143 Data Hold Unit

The Mitutoyo 959143 data hold unit is used to hold the instrument reading, even after the jaws of the instrument are opened. It is designed for use with Mitutoyo Absolute series tools that have SPC capabilities including the absolute solar caliper, absolute digimatic caliper, absolute vernier caliper, absolute back-jaw centerline caliper, absolute snap caliper, absolute low-force caliper, absolute digimatic depth caliper, absolute digimatic depth gage, absolute tire thread depth gage, absolute digimatic scale units, and absolute tire, wheel, and brake calipers.

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 related systems. The company, founded in Tokyo in 1934, formed Mitutoyo America Corporation in 1963 with headquarters in Aurora, IL.