The PC-PRO Round Panning Clamp from Really Right Stuff is an Arca-type compatible, dovetail-equipped, 360° panning base that features an Arca-type clamp equipped with a screw-knob.

A useful accessory for panoramic and landscape photographers, the PC-PRO base allows the user to rotate their camera 360° on top of a tripod, ball head, or other support. The base may be attached to a support or Arca-type ball head via the integrated Arca-type dovetail, a 3/8"-16 threaded socket, or a 1/4"-20 threaded socket. The base also features a rosette design for secure mounting to compatible ball head and other device, and will prevent twisting at the coupling point between the clamp and head over time. A legacy tongue-and-groove adapter is available separately.

When in use, the rotation of the mounted camera may be accurately monitored via a laser engraved degree scale which features markings in 2.5° increments. When the photographer decides on a stopping point the rotation may be locked by an integrated screw knob. The clamp also features a diameter of 2.9", a total height of 1.4", and includes a single bull's-eye bubble level for accurate leveling.