Rotatable Screen Mount, ∅50.8mm

These rotatable mounts can be used to hold and adjust circular targets and polarizers. The rotating mount is supported in a high precision bearing within an aluminum housing. It will accommodate components from 1-6 mm (0.04-0.25") thick. A circular leaf retaining spring holds the components against the mount shoulder. The 50.8 mm mount has a clear aperture of 46mm (1.61") and a scale calibrated every two degrees.