micrometer

(mī-krŏm'ĭ-tər)
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 (mī'krō-mē'tər)
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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For more information on micrometer (caliper), visit Britannica.com.

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. (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.

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(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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1. any instrument or device for measuring very small distances or angles.
2. or micrometer gauge a device for measuring small distances, thicknesses, diameters, etc. with great accuracy.
3. the US spelling of micrometre.

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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.

(mī'krōmēter)
n

A millionth of a meter (10-⁶ meter).

For a list of words related to micrometer, see:

• Measuring Devices - micrometer: device for measuring minute distances and angles, esp. in connection with a telescope or microscope
• Metric System - micrometer: micron
• Measuring and Marking Tools - micrometer: precision instrument with spindle moved by finely threaded screw, used for measuring thicknesses and, by machinists, for turning shafts and boring holes

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See words rhyming with "micrometer."

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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