Optical post holder and optical mounting post

This is an adjustable optical post holder set. Compatible with metric optical table variant and 1/2 inch post and clamping fork. Set includes four main part: holder, knob, nut, and post. Also available, the composite main part option includes holder base with thread for bracing to table, holder top with post clamp and variable length middle part.

The main holder part has the thread in the bottom for the adapter to bracing in the optical table. The commercial clamping fork could also be used f