noun
: a dumpy level with a mirror over the level tube and a pair of prisms so placed that the position of the level bubble can be determined by the levelman without moving his head from the eyepiece
noun
: a dumpy level with a mirror over the level tube and a pair of prisms so placed that the position of the level bubble can be determined by the levelman without moving his head from the eyepiece
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012