theodolite
Definitions
General Science
- noun an instrument formed of a telescope mounted in such a way that it can turn around, used for measuring angles
Construction
- An instrument used in precise surveying consisting of an alidade that is equipped with a telescope, a leveling device, and an accurately graduated horizontal circle. A theodolite may also have an accurately graduated vertical circle.
http://www.dictionarycentral.com/definition/theodolite.html