Starrett 786P.1-4 LCD Blade-Type Micrometer, Non-Rotating Spindle, Plain Thimble, 3-4" Range, 0.00005" Graduation

The Starrett 786P series blade-type outside micrometer has a digital single-value LCD readout that displays in inch and metric units with resolution to 0.00005” (0.001mm) for outside diameter (OD) measurement, and a blade anvil and spindle for measurement of groove diameter of shafts and keyways. It also has a vernier scale in inch units for taking precise outside diameter (OD) measurements, and Statistical Process Control (SPC) data output to transmit results to a computer or external device. The output jack transmits SPC results to a computer through an interface cable (sold separately). The micrometer’s electronic microprocessor can preset, hold, or limit measurement at any position, as well as set a temporary zero position and return to a true zero reading. An automatic off function helps preserve battery life when the unit is not in use. The spindle does not rotate during adjustment, to help provide steady positioning for measurement. The micrometer’s steel frame has a black wrinkle finish that helps reduce glare. A speeder helps provide quick adjustment capability. The vernier scale on the thimble and sleeve has a satin chrome rust- and glare-resistant finish. The spindle and anvil are made of hardened steel for durability. The micrometer includes, and is powered by, a single CR2032 lithium cell battery. Micrometers are precision measuring instruments that use a calibrated screw to measure small distances. These measurements are translated into large rotations of the screw that are then able to be read from a scale or a dial. Micrometers are typically used in manufacturing, machining, and mechanical engineering. There are three types of micrometer: outside, inside, and depth. Outside micrometers may also be called micrometer calipers, and are used to measure the length, width, or outside diameter of an object. Inside micrometers are typically used to measure interior diameter, as in a hole. Depth micrometers measure the height, or depth, of any shape that has a step, groove, or slot. The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company was founded in 1880 and is headquartered in Athol, MA.