Noun
An instrument, used with a telescope or microscope, for measuring minute distances, or the apparent diameters of objects which subtend minute angles. The measurement given directly is that of the image of the object formed at the focus of the object glass.
Source: Webster's dictionaryAdjustment A micrometer that has been tested and found to be off might be restored to accuracy by recalibration. Source: Internet
A micrometer can be calibrated on-site anytime, at least in the most basic and important way (if not comprehensively), by measuring a high-grade gauge block and adjusting to match. Source: Internet
Axons and dendrites in the central nervous system are typically only about one micrometer thick, while some in the peripheral nervous system are much thicker. Source: Internet
Another large micrometer in use. Source: Internet
Both sails used 7.5- micrometer film. Source: Internet
Colloquially the word micrometer is often shortened to mike or mic ( /ˈmaɪk/ ) ( mīk ). Source: Internet