Contour lines look to cross each other in case of ............

To use the Abney clinometer as Abney level the vernier should read ............

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

The method of surveying in which field work and plotting work are done simultaneously, is called ............

The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's ............

An axis about which the telescope can be rotated in a horizontal plane is called ............

The deflection angle may have any value between ............

You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the met…

Location of contour gradient for a highway is best set out from ............