The ratio of the focal length of the objective to that of an eye-piece of a telescope is called its ............

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…

For a transit theodolite the least reading on the main scale is 20'. If its vernier scale should read 20", then ........…

Handles of chains are made up of ............

The altitude of a traverse leg is obtained by multiplying its length by ............

Reduced bearing of a line is an angle between ............

Number of links per metre length of a chain are ............

In chain surveying field work is limited to ............

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