Drop arrow is used in ............

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

The multiplying constant for the tacheometer is ............ where, f = Focal length of the objective, i = Interval betw…

An invert is taken when the point is ............

The distance between steps for measuring downhill to obtain better accuracy ............

Diaphragm of a surveying telescope is held inside ............

The difference between the sum of the angles of a spherical triangle on the earth's surface and the angles of the corres…

The diaphragm of a stadia theodolite is fitted with two additional ............

The operation of turning the table so that all the lines on the paper are parallel to the corresponding lines on the gro…