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The Brown & Sharpe chrome-framed outside micrometer has a vernier scale in inch units for taking precise outside diameter (OD) measurements, a convertible friction drive thimble mechanism for uniform or variable pressure during adjustment, and tungsten carbide faces for wear resistance.
The micrometer’s frame, thimble, and sleeve have a satin chrome rust- and glare-resistant finish. Frames with a base measurement range greater than or equal to 1” are heat-insulated to help reduce temperature-related expansion or contraction. The vernier scale on the thimble and sleeve is graduated to 0.0001”. Depending on the model, graduation markings on the barrel may be straight or slanted to help reduce parallax errors when reading. The ratchet mechanism can be disabled for variable adjustment control. The spindle and anvil have flat measuring faces and are carbide-tipped for wear resistance. A spindle lock helps provide secure locking of the measurement position. /p>
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.
Brown & Sharpe manufactures precision measuring equipment and metrology hand tools. The company, founded in 1833, played a key role in setting industrial standards in the United States. Brown & Sharpe was acquired by Hexagon Metrology in 2001, and is headquartered in North Kingstown, RI.
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