Pyrex lens to suit 3" ferrule. Use with 3" Slicone O-Ring and 3" triclmap to make a viewport. Caution, clamp needs only a tiny amount of finger tension
Pyrex lens to suit 3" ferrule. Use with 3" Slicone O-Ring and 3" triclmap to make a viewport. Caution, clamp needs only a tiny amount of finger tension