What is a levelling staff in surveying?

A levelling staff, also known as a levelling rod, is a graduated rod typically made of wood or aluminum. It is used alongside a levelling instrument to determine height differences between points or measure their height above a vertical datum. When utilized specifically for stadiametric rangefinding, it is referred to as a stadia rod.

What we know

• A level staff is a graduated wooden or aluminum rod used with a levelling instrument. [1, 2]
• It is used to determine the difference in height between points or heights of points above a vertical datum. [2]
• When a level staff is used for stadiametric rangefinding, it is called a stadia rod. [2]

Where to go next

• how it workedHow does an optical level work in surveying?
• the bigger pictureWhat is levelling in surveying and geodesy?
• a case in pointWhat is a stadia rod?
• compared withHow does a theodolite differ from an optical level?
• how we knowWhat terms are used in surveying glossaries for levelling?
• an unexpected connectionHow can a measuring rod also measure distance?A standard height-measuring levelling staff can double as a distance-measuring tool when used for stadiametric rangefinding.

Sources

• [1]level staff (Wikidata Q1474754) · CC0 1.0
• [2]Level staff · CC BY-SA 4.0
• [3]Levelling · CC BY-SA 4.0
• [4]Level (optical instrument) · CC BY-SA 4.0
• [5]Glossary of levelling terms · CC BY-SA 4.0