Micron vs. Micrometer

By Jaxson

Main Difference

The main difference between Micron and Micrometer is that the Micron is a one millionth of a metre and Micrometer is a device incorporating a calibrated screw.

  • Micron

    The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling 1×10−6 metre (SI standard prefix “micro-” = 10−6); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch).

    The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria, and for grading wool by the diameter of the fibres. The width of a single human hair ranges from approximately 10 to 200 μm. The first and longest human chromosome is approximately 10μm in length.

  • Micrometer

    A micrometer ( my-KROM-i-tər), sometimes known as a micrometer screw gauge, is a device incorporating a calibrated screw widely used for precise measurement of components in mechanical engineering and machining as well as most mechanical trades, along with other metrological instruments such as dial, vernier, and digital calipers. Micrometers are usually, but not always, in the form of calipers (opposing ends joined by a frame). The spindle is a very accurately machined screw and the object to be measured is placed between the spindle and the anvil. The spindle is moved by turning the ratchet knob or thimble until the object to be measured is lightly touched by both the spindle and the anvil.

    Micrometers are also used in telescopes or microscopes to measure the apparent diameter of celestial bodies or microscopic objects. The micrometer used with a telescope was invented about 1638 by William Gascoigne, an English astronomer.

    Colloquially the word micrometer is often shortened to mike or mic ( MYKE).

  • Micron (noun)

    The thousandth part of one millimeter; the millionth part of a meter.

  • Micron (noun)

    A very tiny amount.

  • Micron (noun)

    synonym of breve

  • Micrometer (noun)

    An SI/MKS unit of measure, the length of one millionth of a meter. Symbols: µm, um, rm.

  • Micrometer (noun)

    A device used to measure distance very precisely but within a limited range, especially depth, thickness, and diameter.

  • Micron (noun)

    a unit of length equal to one millionth of a metre, used in many technological and scientific fields.

  • Micrometer (noun)

    a gauge that measures small distances or thicknesses between its two faces, one of which can be moved away from or towards the other by turning a screw with a fine thread.

  • Micrometer (noun)

    US spelling of micrometre

Oxford Dictionary

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