any of various instruments or devices for the accurate measurement of distances or angles
2. Also called: micrometer gauge, micrometer calliper
a type of gauge for the accurate measurement of small distances, thicknesses, diameters, etc. The gap between its measuring faces is adjusted by a fine screw, the rotation of the screw giving a sensitive measure of the distance moved by the face
Derived forms
micrometry (miˈcrometry)
noun
micrometric (ˌmaɪkrəʊˈmɛtrɪk) or micrometrical (ˌmicroˈmetrical)
adjective
micrometer in American English1
(maɪˈkrɑmətər)
noun
1.
an instrument for measuring very small distances, angles, diameters, etc., used ona telescope or microscope
2.
micrometer caliper
Word origin
Fr micromètre: see micro- & -meter
micrometer in American English2
(ˈmaɪkroʊˌmitər)
noun
micron
: Brit. sp. ˈmicroˌmetre
micrometer in Mechanical Engineering
(maɪkrɒmɪtər)
Word forms: (regular plural) micrometers
noun
(Mechanical engineering: Control, instrumentation and metrology)
A micrometer is a device that uses a screw gage to measure components very exactly.
The diameter of very thin wire can be measured accurately with a micrometer.
A micrometer is a hand-held instrument for accurately measuring small distances, usually thicknessor diameter.
A micrometer is a device that uses a screw gage to measure components very exactly.