25.8mm Outer Diameter, Precision Pinhole Mount, #53-287
With a 1.02" diameter, the Precision Pinhole Mount features a retainer ring for the secure placement of ⅜" (9.5mm) diameter unmounted precision pinholes. The back face has a male external RMS thread (20.32mm x 36TPI). When used with #03-627 threaded objective ring mount, the Precision Pinhole Mount can easily mount to C-mount components. A two piece ring mount with a ¼-20 mounting hole is available to adapt the Precision Pinhole Mount to standard optical breadboards and posts.