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micrometer

 
Dictionary: mi·crom·e·ter1   (mī-krŏm'ĭ-tər) pronunciation
n.
A device for measuring very small distances, objects, or angles, especially one based on the rotation of a finely threaded screw, as in relation to a microscope.


mi·cro·me·ter2 ('krō-mē'tər) pronunciation
n.
A unit of length equal to one thousandth (10 -3) of a millimeter or one millionth (10 -6)of a meter.


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Britannica Concise Encyclopedia: micrometer (caliper)
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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 a screw. The accuracy of the measurements depends on the accuracy of the screw-nut combination.

For more information on micrometer (caliper), visit Britannica.com.

Sci-Tech Encyclopedia: Micrometer
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A precision instrument used to measure small distances and angles. A common use is on a machinist's caliper, as in the illustration. See also Caliper.

Machinist's outside caliper with micrometer reading 0.250 in. (<i>L. S. Sfarrett Co.</i>)
Machinist's outside caliper with micrometer reading 0.250 in. (L. S. Sfarrett Co.)

The spindle of the caliper is an accurately machined screw, which is rotated by the thimble or the ratchet knob until the object to be measured is in contact with both spindle and anvil. The ratchet slips after correct pressure is applied, ensuring consistent, accurate gaging. The number 1 on the sleeve represents 0.1 in.; the smallest divisions are 0.025 in. A vernier scale allows accurate reading to 0.0001 in. See also Vernier.


(1) One millionth of a meter. Also known as a "micron." See metric system and micron.

(2) A mechanical instrument that is used to measure diameters and small distances.

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Dental Dictionary: micrometer
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(mī'krōmēter)
n

A millionth of a meter (10-6 meter).

 
Columbia Encyclopedia: micrometer
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micrometer (mīkrŏm'ətər, mī'krōmē'tər).

1 Instrument used for measuring extremely small distances. Typical examples are devices used in astronomical telescopes to measure the apparent diameter of celestial objects and similar devices used in microscopes. In both of these devices a fine hair or filament is moved from one extremity to the other of the image of an object and the distance read on a calibrated scale. Another typical micrometer is the micrometer caliper, a device in which an object to be measured is enclosed between two jaws, one fixed and the other movable by means of a fine screw. When the jaws are just touching the object, the distance between the jaws can be read on an associated scale, often to an accuracy of 10−4 (one ten-thousandth) in., or 10−6 (one millionth) m.

2 Unit of linear distance equal to 10−6 (one millionth) m. It was formerly known as a micron.


Veterinary Dictionary: micrometer
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1. instrument for making minute measurements.
2. micron; one thousandth (10−3) of a millimeter or one millionth (10−6) of a meter. Abbreviated μm.
3. see micron.

Translations: Micrometer
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Dansk (Danish)
1.
n. - mikrometer (måleinstrument)

2.
n. - mikrometer (måleenhed)

Nederlands (Dutch)
zeer nauwkeurig meetapparaat, micron (een miljoenste meter), micrometer

Français (French)
1.
n. - micromètre

2.
n. - (Mes) micron

Deutsch (German)
1.
n. - Feinmeßschraube

2.
n. - Mikrometer

Ελληνική (Greek)
n. - (μηχαν.) μικρόμετρο

Italiano (Italian)
micrometro

Português (Portuguese)
n. - micrômetro (m)

Русский (Russian)
микрометр

Español (Spanish)
1.
n. - micrómetro

2.
n. - tornillo micrométrico

Svenska (Swedish)
n. - mikrometer

中文(简体)(Chinese (Simplified))
1. 千分尺, 微米

2. 测微计

中文(繁體)(Chinese (Traditional))
1.
n. - 測微計

2.
n. - 千分尺, 微米

한국어 (Korean)
1.
n. - 마이크로미터(100만분의 1미터)

2.
n. - 정밀 측정기

日本語 (Japanese)
n. - マイクロメーター, マイクロメートル, ミクロメーター

العربيه (Arabic)
‏(الاسم) جهاز دقيق لقياس, الأبعاد‏

עברית (Hebrew)
n. - ‮מד מרחקים זעירים, מיקרומטר‬
n. - ‮מיליונית המטר‬


 
 
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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved.  Read more
Sci-Tech Encyclopedia. McGraw-Hill Encyclopedia of Science and Technology. Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved.  Read more
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© 1981-2009 Computer Language Company Inc.  All rights reserved.  Read more
Dental Dictionary. Mosby's Dental Dictionary. Copyright © 2004 by Elsevier, Inc. All rights reserved.  Read more
Columbia Encyclopedia. The Columbia Electronic Encyclopedia, Sixth Edition Copyright © 2003, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/ Read more
Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.  Read more
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