RSP Series Rotation Mounts feature full ball bearing races and can be coarsely aligned using the knurled edge of the rotating platform. Fine adjustment, with 4 arc-minute sensitivity, is made easily with a top mounted knob. Position can be locked in place securely with the little screw in the center of the knob. Position is indicated in 2° increment markings around the top circumference.

RSP Series Rotation Mounts hold 1.0 or 2.0 in. optic such as waveplates and polarizers securely in place with included retaining rings. Additionally, a variety of optic and optic holders can directly thread into the central threaded aperture. For example, RSP-1T can hold 0.5 in. optic in  adapter, 0.5 in. beamsplitting cube in holder, or Glan-Laser Calcite Polarizers such as . RSP-2T can hold 2.0 in. cylindrical lens in rotation adapter or 1.0 in. beamsplitting cube in holder.

RSP Series Rotation Mounts can be post mounted in vertical configuration using the tapped holes on the side of the frame. Alternatively, they can be used as a stage and directly mounted to optical table, breadboard, or other stage using two counter bored clearance holes on diagonal corners. Aperture inserts and are available to make them a solid platform for on-axis mounting and rotation of optical component supported by an optical post.