( n. )
The lens, or combination of lenses, at the eye end of a telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed.
( n. )
The lens, or combination of lenses, at the eye end of a telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012