Definitely a TO-3 mount not c mount.
Junktronics is a member here. Just look up the members list and it should have his store/ phone #. He may be able to give U advice. Could also try OneStopLaserShop, or post to Steve Roberts (laserGuru) either here or on google groups- alt.lasers. Laser Sam may even chime in over there to give U some help if you are very clear and specific about the problem and solution needed.


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, so my judgement may be impaired,
but looking at the pic (as posted above) it kinda looks like a c-mount inside of a TO-3 bracket ..sorta...
kinda hard to make out in that photo..
