Tribrach (instrument)

A tribrach is a surveying instrument used primarily for the precise positioning of total stations, theodolites, and other optical instruments. It connects the surveying instrument to a tripod and allows for the leveling and orientation of the instrument in multiple dimensions. Key features of a tribrach include: 1. **Leveling Mechanism**: Most tribrachs come equipped with leveling screws and a spirit level or electronic leveling system to ensure that the instrument is perfectly horizontal.