Prisms & Tribrachs Prisms
All Topcon prisms feature precision ground glass mounted in a high impact plastic housing. Our zero constant prisms with 60mm diameter provide for an accuracy of /- 2 arc seconds. Combined with a huge selection of holders and targets, Topcon has a prism setup for any distance measurement application.

Tribrachs
Topcon tribrachs are recommended for accurate plumbing of Topcon total stations, theodolites, reflector systems and other accessories. They are compatible with most current type tribrachs in today's market. Models are available with or without a 3X optical plummet. Special tribrachs designed for use with robotic instrumentation are also available.

Topcon tribrachs feature a special US Patented optical system that allows for quick and accurate checking and adjustment of the optical line of sight. This is accomplished simply by using the optical plummet in a Topcon instrument's alidade in conjunction with the optical plummet in the tribrach. This "See through technology" is another Topcon first.