Recent questions tagged levelling

An observer standing on the deck of a ship just sees the top of a lighthouse. The top of the lighthouse is $40$ m above the sea level and the height of the observer’s eye...

Which of the following statements is FALSE?Plumb line is along the direction of gravityMean Sea Level (MSL) is used as a reference surface for establishing the horizontal...

A levelling is carried out to establishing the Reduced Levels (RL) of point R with respect to the Bench Mark (BM) at P. The staff readings taken are given below:$\begin{a...

The Reduced Levels (RLs) of the points P and Q are $+49.600$ m and $+51.870$ respectively. Distance PQ is $20$ m. The distance (in m from P) at which the $+51.000$ m con...

Which of the following errors can be eliminated by reciprocal measurements in differential leveling?Error due to earth’s curvatureError due to atmospheric refractionBoth ...