This unit Consist of two identical rotatable mounts , each provided with polaroid disc or polarizer mounted in a rotatable mount of 25mm aperture, Both rotatable mounts are fitted with a pointer attachment which traverses over metal scale of 75mm diameter ,graduated up to 360°x1°. Due to its universal size of mount it can be fitted to any size of collimator and telescope tubes with the help of three mounting screws.
This unit Consist of two identical rotatable mounts , each provided with polaroid disc or polarizer mounted in a rotatable mount of 25mm aperture, Both rotatable mounts are fitted with a pointer attachment which traverses over metal scale of 75mm diameter ,graduated up to 360°x1°. Due to its universal size of mount it can be fitted to any size of collimator and telescope tubes with the help of three mounting screws.