Q&A for How to Use a Dumpy Level

It can be used in archaeology to measure the height above sea level of archaeological features, so they can be accurately recorded on plans.

Benchmark information is usually written on the monuments supplied by the area you are surveying in.

The formula to calculate height using a dumpy level is: Benchmark height + backsight measurement - foresight measurement.

While taking a backsite reading (to a reference point), to align the arrow on the measurement ring with the marking on the upper rotating part of the dumpy level (the reference marking is made aligning the focusing line). While taking a foresite reading, the upper part rotates while the ring on which angles are written will not rotate. The reading marked by the reference marking of the upper portion is the horizontal angle between two points.