station setup plus

A total station setup in which:

• The coordinate for the occupied point must be keyed in, previously measured, or filled in at a later time.
• The coordinates for the backsights or the azimuths to the backsights must be keyed in or previously measured.
• All horizontal angles are measured relative to the first backsight.

This setup has redundant information so it is easy to detect errors in the backsight coordinates, azimuths, or instrument setup.

Also known as "multiple backsight".