The cross staff is carried out for ............

The technique of plotting all the accessible stations with a single set up of plane table is called ............

With the rise of temperature, the sensitivity of bubble tube ............

For taking offsets with an optical square on the right hand side of the chain line, it is held ............

Height of instrument method of booking readings is adopted ............

The instrument used for accurate centering in plane table survey is ............

For a closed traverse the omitted measurements may be calculated ............

The method of reversal ............

An imaginary line joining the point of intersection of the cross-hairs of the diaphragm and the optical plane is called …