In the surveying telescope, diaphragm is held ............

The tacheometric method of contouring is particularly suitable ............

Pick up the odd instrument ............

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

The desirable multiplying and additive constants for a tacheometer ............

If L is the measured length of a base line whose elevation is h above MSL: the necessary correction to reduce the base l…

While measuring with a metallic tape of 30 m length pull should be applied ............

The following readings correspond to the check at the end of a page of level field book but they are not given in the or…

Two contour lines, having the same may cross each other only in the case of ............