The image formed by the objective in the plane of cross hairs is ............

For preparation of contour plan for a route survey ............

In precision theodolite traverse for roads and railways, the angular error of closure should not exceed ............

Straight, parallel and widely spaced contours represent ............

A plain scale is used to read ............

The amount of correction due to local attraction at a place ............

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

The projection of a traverse line on a line perpendicular to the meridian is known as ............

The stadia intercept on a fixed hair instrument vertically held is 1 m. If its constants are 800 and 0.5 and total numbe…