The Mitutoyo 573-256SP-10 tire/wheel/brake digital caliper is designed for measuring automobile parts during vehicle maintenance and has an output function for data management. This caliper has accessible function control buttons, such as Origin-set, Zero-setting, Power On/Off, Inch/Metric, and Data Output, and uses both inch and metric measuring systems.

This caliper has the ABSOLUTE electrostatic capacitance linear encoder. It weighs 184 g. Range is 0 - 6"/0 - 150 mm, resolution is 0.0005"/0.01 mm, and accuracy is rated at + or - 0.005"/0.15 mm. Also included are origin-setting, zero-setting, data output, inch/metric conversion, and power on/off function buttons. The Digital LCD Data Reading Hold function is available with the optional data hold unit (part 959143), sold separately. An alarm alerts the user to low voltage and counting value composition errors. A thumb screw locks the scale’s position. Response speed is unlimited. The caliper has Statistical Process Control (SPC) data output capability for manufacturing quality control. It outputs data using a serial data interface to a computer or other dedicated recording device using SPC cable with data switch (959149 or 959150, depending on cable length). The SR44 silver oxide cell battery (938882) lasts for approximately 3.5 years of normal use and is recommended to maintain constant voltage levels.

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, machining, manufacturing, carpentry, and medicine. 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 all 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 dial caliper is used also for measuring size differential between two objects. The digital caliper takes the same sort of differential measurements as the dial caliper by zeroing the display at any point along the slide, with an LCD (replacing the dial) that displays a single, easily read value in both English and metric units. Some digital calipers can hold data readings between measurements and send them to data collection devices.

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.

What’s in the Box?

• Mitutoyo 573-256SP-10 digital caliper
• One SR44 silver oxide cell battery