Profile Leveling

Front

The process of determining the elevations of a series of points at measured intervals along a line

Back

profile leveling

Front

A permanent point of known or assumed elevation from which a leveling survey is started.

Back

benchmark

Front

The height of a point relative to the benchmark location of the survey.

Back

elevation

Front

The location of the leveling rod when the reading is being taken

Back

station

Front

A level reading taken on a point of known or assumed elevation.

Back

backsight

Front

The elevation of the level line of sight with respect to the benchmark, as indicated by the cross hairs in the telescope.

Back

height of instrument

Front

A level reading taken on a point of unknown elevation.

Back

foresight

Front

A solid location, usually marked by a temporary stake, on which a foresight is taken, to which the instrument is moved, and from which a backsight is taken to determine a new height of instrument mark.

Back

turning point

Front

The measurement records for a survey.

Back

field notes

Front

The maximum acceptable distance that a survey may be off in measurement after being closed out on the benchmark

Back

allowable error