The theodolites used for making tacheometric observations by optical wedge system, are ............

The length of an engineer's chain is ............

Which one of the following methods can be used for contour interpolation?

Ceylon Ghat tracer can read slopes up to ............

Contour interval, within the limits of a map ............

Usefullness of plane table is enhanced by providing ............

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…

The tension, at which the effects of pull and sag for a tape are neutralised, is known as ............

A surface which is normal to the direction of gravity at all points as indicated by a plumb line is known as ...........…