Survey is conducted at 40° C and the measured length was 5 km. If the chain was standardized at 20° C and co-efficient of linear expansion of chain material is 0.3 * 10^-5 /°C, then the correct length is ............

The strength of fix is poor when ............

The magnetic bearing of a line is 32° and the magnetic declination is 10°15'W. The true bearing is ............

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

The main object of running a tie line is ............

The very first reading taken is called ............

If the fore bearing of a line is N26°35'W, its back bearing will be ............

The imaginary line passing through the intersection of cross hairs and the optical centre of the objective, is known as …

An angle of deflection right, may be directly obtained by setting the instrument to read ............