Optec 2" to Standard SCT Thread Adapter

The 2-inch to SCT thread Adapter is Optec's original secure fit adapter for 2" x 24tpi SCT male telescope thread. By holding tight tolerances (+/- 0.003") Optec has achieved a slip-fit that is second-to-none. When used with the TCF-S focuser, the #17665 with its precision machined dovetail cut exactly matches the three thumbscrews on the focuser's drawtube. By tightening the thumbscrews, the dovetail is drawn tighter to the face of the drawtube completely eliminating flexure.