The Mitutoyo Series 571 ABSOLUTE Digimatic LCD Depth Gauge, Caliper Type, Metric, depending on the model, have a measurement range of 0 up to 1000mm, and a resolution (or smallest graduation interval) of 0.01mm, with up to + or - 0.02mm of accuracy . The LCD screen displays in metric, and can keep track of the origin point for the life of the battery (about 3 years under normal use). The bases are either 100mm or 250mm long, and the measuring faces of the units are hardened, ground, and lapped for durability and accuracy. The gauges conform to European Conformity (CE) marking and certain models in this series conform to the Ingress Protection 67 (IP67) standard. The display has origin-set, zero, and data output functions for convenience. The units support SPC output. The gauges in this series include an SR44 battery. Optional SPC cables, wider bases (for up to 450mm range models), and an LCD with data hold are sold separately. Depth gauges are typically used in manufacturing, machining, and mechanical engineering.
Depth gauges are precision measuring instruments used to determine the depth of any shape that has a step, groove, or slot. These gauges often take the form of sliders that travel on a measuring beam or rods, are moved to position by hand, and then adjusted with a calibrated screw. The base of the gauge rests at the top of the shape whose recession is to be measured, while the beam or rods extend to the bottom of the recession to determine the measurement. Gauge position is read from a graduated scale, dial, counters, or an electronic display.
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.