Alignment apparatus

Apparatus and method of surveying

Apparatus for applying marks to surfaces

Apparatus for displaying an appropriate height

Apparatus for producing a horizontal foundation for a...

Automatic plumbing device

Auxiliary tool for carefully levelling finishing floors

Brake mechanism for computerized grade rod

Changeable surveyors rod

Clamp for a tooling ball and a method for establishing a plane f

Coded target for use with combination laser and...

Combination range pole and bubble-level therefor

Combined story pole and elevation rod

Contractor's grade rod apparatus and procedure for setting and c

Device for alignment of process equipment and method of use ther

Device for holding a surveyor's instrument

Device for holding a surveyor's range pole

Device for holding surveyor's instrument

Device of and method for visual fixation of signal markers...

Direct reading grade rod with a sliding scale