The latitude and departure of a traverse line are both positive when the whole circle bearing of the line lies in the ............

When the first object is to be focused, the scale is set to 0°00'00" and then ............

Offsets are ............

The curve composed of two arcs of different radii having their centers on the opposite side of the curve, is known .....…

The main difference between an optical square and prism square is ............

In measuring horizontal angles, the theodolite should be turned ............

The horizontal angle between the truth meridian and magnetic meridian is known as ............

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 horizontal glass in an optical square is ............