The black anodized aluminum Peg Rotation Base comes with a joining peg that goes through the center of the base and mounts to 1/4-20 (or M6) threaded holes in an optical breadboard or table. The base rotates around the peg freely and can be locked in position by tightening two 8-32 (or M4) set screws located on the circumference of the base. Shown here is 460P Series ball bearing or 460PD Series dovetail linear stages to be rotated to any angle and then locked in position.

The surface of both the 1.5 in. (31.8 mm) and the 2.6 in. (64.8 mm) diameter plates feature an array of threaded holes for attaching other components. This includes translations stages, and these adapters offer an easy way to add rotational degrees of freedom to stage assemblies. Both sizes are available in English or Metric versions, having 1/4-20 and 8-32 or M6 and M4 threads, respectively.