Level line and horizontal line are

In total station, data is stored in

The height of instrument is equal to

A plain scale is used to read

Accurate centering of a plane table is done by

If whole circle bearing of a line is 120°, its reduced bearing is

In order to locate a point by oblique offsets we must measure and note at least

The angle of intersection of a contour and a ridge line, is

Handles of chains are made up of