Normal tension is that pull which ............

The 'fix' of a plane table station with three known points, is bad if the plane station lies ............

The vertical distance above or below the datum is called ............

Cross staff is an instrument used for ............

The tension, at which the effects of pull and sag for a tape are neutralised, is known as ............

It is more difficult to obtain good results while measuring horizontal distance by stepping ............

Substense bar is an instrument used for ............

Collimation method is use in ............

In a tacheometer provided with anallactic lens distance between object glass and vertical axis is 15 cm. Focal length of…