( n. )
An instrument with two arms that are pivoted together at one end, and a graduated arc, -- used by military engineers for measuring and laying off angles of fortifications.
( n. )
An instrument with two arms that are pivoted together at one end, and a graduated arc, -- used by military engineers for measuring and laying off angles of fortifications.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012