The Precision Micrometer Screw Gauge

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This micrometer is composed of a frame, anvil, thimble, and ratchet stop. Used in most mechanical trades for precision measurement. Micrometers use the principle of a screw to amplify small distances that are too small to measure. The accuracy of a micrometer derives from the accuracy of the thread form.

Keywords

Micrometer, screw gauge, machining tools, precision instrument, dial caliper, calibration

Galleries

Blacksmithing and Metalwork

Source

Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)

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