|
surveyor's cross: instrument for establishing right-angled lines of sight, by means either of open sights set at the ends of an equal-arm cross or slits in a cylinder.
|
surveyor's line: a long string or rope used to measure distances for surveying.
|
surveyor's square: another name for a surveyor's cross.
|
theodolite: surveying instrument for measuring horizontal angles, and perhaps vertical angles, see article on the theodolite.
|
theodolite and sundial: an instrument combining the functions of a sundial and a theodolite.
|
