( n. )
An instrument used for measuring the distance of an object from an observer; as, a telescope with a micrometer for measuring the apparent diameter of an object whose real dimensions are known.
( n. )
An instrument used for measuring the distance of an object from an observer; as, a telescope with a micrometer for measuring the apparent diameter of an object whose real dimensions are known.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012