While surveying a plot of land by plane tabling, the field observations ............

To find the true difference of level between two points, the level should be kept ............

A branch of surveying in which the horizontal and vertical distances of points are obtained by instrumental observations…

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

Designation of a curve is made by ............

In case of a direct vernier scale ............

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

In an adjusted level, when the bubble is central, the axis of the bubble tube becomes parallel to ............

Stadia tacheometry was discovered by James Watt in the year ............