During levelling work a point at which staff is held on ?

لیولنگ کے کام کے دوران ایک نقطہ جس پر عملہ رکھا جاتا ہے؟

Staff point

Bench mark

Station point

Instrument station.

It is the ground location where the levelling staff is placed.

Readings are taken from this point using a level instrument.

Examples: Benchmark (BM), Change Point (CP), Back Sight (BS), Fore Sight (FS) locations.