The industrial micrometer traces its origin to an astronomical micrometer invented by William Gascoigne (1612-1644) in 1639. Gascoigne's invention was designed specifically for use with telescopes and consisted of a screw-adjusting device which enabled...

An instrument for measuring very small distances or dimensions. A caliper or gauge arranged to allow minute measurements. Abbreviated as (m). Also known as micron...

A micrometer (pronounced /mаɪˈkrɒmɪtər/) (enPR: mī-krŏmʹĭ-tər), sometimes known as a micrometer screw gauge, is a device used widely in mechanical engineering and machining for precisely measuring, along with other metrological instruments...