Centering error of a theodolite produces an error ............

A lemniscate curve between the tangents is transitional throughout, if the polar deflection angle of its apex is equal t…

A clinometer is used for ............

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

If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is d…

The capacity of a telescope of producing a sharp image is called its ............

Ranging is an operation of ............

The length of chain is measured from ............

Anallatic lens is provided to ............