Mitutoyo 543 series LCD Absolute Digimatic Indicator ID-S displays inch/metric measurements in a choice of resolution and 0.5"/12.7mm measuring range. The indicator is automatically set to zero when it is turned on for measuring in either or both directions (plus or minus), and has a 0.375" diameter stem, a steel ball contact point with a 4-48 UNF (Unified National Fine) thread, and a choice of flat or lug back. The LCD display is automatically set to zero when powered on at the current spindle location for measuring in either or both directions, and has a sealed housing that is Ingress Protection (IP) certified IP42 for protection against dust and water. An audible alarm indicates low battery, scale contaminations, and data composition errors. The indicator has SPC (statistical process control) data output for data analysis (requires cable, not included). The indicator is powered by an SR44 battery (included).SpecificationsDial typeLCDDial readingInch and metric, selectableRange0.5"/12.7mmStem0.375"Contact point materialSteelContact point thread4-48 UNFMountingFlat or lug backData formatSPCData outputRS-232PowerSR44 battery Dial indicators may also be called dial gauges, dial calipers, and probe indicators. These precision measuring tools are used to accurately measure small linear distances and object sizes. The dial magnifies the measurement so that it can more easily be read by the human eye. Frequently used in manufacturing, laboratories, and other industrial or mechanical fields, dial indicators are used anywhere a small measurement must be found and recorded or transferred, such as checking the variation in tolerance of a workpiece. Dial test indicators are very similar to dial indicators, except that the axis of measurement is perpendicular to the axis of the indicator. Standard dial indicators measure the displacement along the axis of the indicator. Dial indicators can be analog, with a mechanical dial, or electronic, with a digital display. Some electronic models transfer the data electronically to a computer for recording and potential manipulation.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.