( n. )
A method of leveling a line or surface by sighting along the tops of two or more straight edges, or a range of properly spaced poles. See 3d Bone, v. t.
( n. )
A method of leveling a line or surface by sighting along the tops of two or more straight edges, or a range of properly spaced poles. See 3d Bone, v. t.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012