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The Starrett 764 series LCD outside micrometer has a deep-throated frame for measuring thickness of sheet metal, paper, plastic, or rubber parts, a 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 vernier scale in inch units for taking precise outside diameter (OD) measurements.
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 micrometer’s frame has a black wrinkle finish that helps resist rust and reduce glare. A friction thimble mechanism helps provide uniform pressure for precise, repeatable measurement. The vernier scale on the thimble and sleeve has a satin chrome rust- and glare-resistant finish. The spindle and anvil have micro-lapped measuring faces for accuracy and are carbide-tipped for wear resistance. A knurled ring-type lock nut helps provide secure locking of the measurement position. 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.
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