An industrial grade instrument with high performance and user convenience. This unit is used for accurate angle
determination. It features an illuminated optical vernier which allows users to take data to the accuracy of 30” in the dark;
a 2.2cm achromatic optical system with helical focusers for telescope and eyepiece accommodation. It also features an
auto-collimation system that gives a rapid and precise setup. Accessories included are a prism, a mounted grating, and an auto-collimation mirror. A detailed instruction manual is included.