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)