Slotted Base, Magnetic Swivel, 8-32 and 1/4-20 Thread

The APHB-T swivel base utilizes a magnet for initial positioning and a swivel clamp for aligning with optical table holes for final lock down.  The top is threaded with both 1/4-20 and 8-32 holes for mounting a post or mirror mount directly to the top of the swivel base.