micrometer

micrometer
micrometer1
/muy krom"i teuhr/, n.
1. any of various devices for measuring minute distances, angles, etc., as in connection with a telescope or microscope.
2. Also called mike, micrometer caliper. a precision instrument with a spindle moved by a finely threaded screw, for the measurement of thicknesses and short lengths, commonly used by machinists for turning shafts or boring holes.
Also, esp. Brit., micrometre.
[1660-70; MICRO- + -METER]
micrometer2
/muy"kroh mee'teuhr/, n.
micron (def. 1).
[MICRO- + METER1]

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▪ measurement instrument

      instrument for making precise linear measurements of dimensions such as diameters, thicknesses, and lengths of solid bodies; it consists of a C-shaped frame with a movable jaw operated by an integral screw. The fineness of the measurement that can be made depends on the lead of the screw—i.e., the amount the spindle moves toward or away from the anvil in one revolution and the means provided for indicating fractional parts of a revolution. The accuracy of the measurements depends on the accuracy of the screw-nut combination.

      Although the prefix micro indicates one-millionth, the corresponding length of 0.000001 metre is known as a micron. See angstrom.

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Universalium. 2010.

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Look at other dictionaries:

  • Micrometer — Mi*crom e*ter, n. [Micro + meter: cf. F. microm[ e]tre.] An instrument, used with a telescope or microscope, for measuring minute distances, or the apparent diameters of objects which subtend minute angles. The measurement given directly is that… …   The Collaborative International Dictionary of English

  • micrometer — micrometer1 [mī kräm′ət ər] n. [Fr micromètre: see MICRO & METER] 1. an instrument for measuring very small distances, angles, diameters, etc., used on a telescope or microscope 2. MICROMETER CALIPER micrometer2 [mī′krō mēt΄ər] n …   English World dictionary

  • micrometer — (n.) 1660s, from MICRO (Cf. micro ) + METER (Cf. meter). Originally a telescope attachment; from 1884 as a craftsman s fine measuring tool. Related: Micrometry; micrometric …   Etymology dictionary

  • micrometer — ► NOUN ▪ a gauge which measures small distances or thicknesses …   English terms dictionary

  • Micrometer — This article is about the measuring device. For the unit of length, see Micrometre. Outside, inside, and depth micrometers A micrometer (   …   Wikipedia

  • micrometer — [1] A precision measuring tool that will give readings accurate to 0.002 mm or 0.0001 of an inch. Sometimes called inside micrometer or outside micrometer. Also called a mike. [2] A unit of measurement of thickness which is equal to one… …   Dictionary of automotive terms

  • micrometer — he·lio·micrometer; micrometer; ra·dio·micrometer; stereo·micrometer; ul·tra·micrometer; …   English syllables

  • micrometer — mikrometras statusas T sritis Standartizacija ir metrologija apibrėžtis Ilginių matmenų matuoklis, veikiantis sraigto principu. atitikmenys: angl. micrometer; micrometer calliper vok. Mikrometer, n; Schraubenmikrometer, n rus. микрометр, m pranc …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • micrometer — mikrometras statusas T sritis Standartizacija ir metrologija apibrėžtis Tikslus vidmatis ar išormatis, turintis smulkiasriegį sraigtinį mechanizmą, kuris stumia matavimo veleną su skale, o iš skalės rodmenų nustatoma matuojamojo dydžio vertė.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • micrometer — /maɪˈkrɒmətə / (say muy kromuhtuh) noun 1. any of various devices for measuring minute distances, angles, etc., as in connection with a telescope or microscope. 2. a U shaped gauge for measuring thicknesses or short lengths in which the gap… …  

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