At a change point ............

The bubble tube is nearly filled with ............

For the locating a distant object visible from two transit stations, the method usually preferred to, is ............

Two hill tops A and B 20 km apart are intervened by a third top C. If the top most contour of the three hill tops are of…

The correction for sag is ............

The diaphragm of a leveling telescope contains ............

Handles are connected to the link by ............

Stadia tacheometry was discovered by James Watt in the year ............

Imaginary line passing through points having equal magnetic declination is termed as ............