Target collimator for rough alignment Penta prism makes it easy to read the circular vial Erect image Large focusing knob for easy alignment Fast aperture for a sharp image of the target (measuring rod) Endless gon/angle setting using knobs with fric
Target collimator for rough alignment Penta prism makes it easy to read the circular vial Erect image Large focusing knob for easy alignment Fast aperture for a sharp image of the target (measuring rod) Endless gon/angle setting using knobs with friction-braked rotation