Pyrex lens to suit 2"ferrule. Use with 2" Slicone O-Ring and 2"triclmap to make a viewport. Caution, clamp needs only a tiny amount of finger tension
Pyrex lens to suit 2"ferrule. Use with 2" Slicone O-Ring and 2"triclmap to make a viewport. Caution, clamp needs only a tiny amount of finger tension