Toolbert
Stainless
- Joined
- Nov 29, 2003
- Location
- Vashon Island, WA
I'm duplicating some lens adapters for theater "effects" projection ... and need to cut a fine internal thread to fit a German lens of probably 1970's vintage. The threads are so short it's hard to sight a good match even with my best B&S thread gages.
The major diameter is clearly 50mm.
The thread pitch is a tossup with the .75mm, .8mm and 32 tpi gages - I can only guess.
Does anyone recognize this as an obvious standard, that I can consult to do it right? Any other words of wisdom?
thanks,
Bob
The major diameter is clearly 50mm.
The thread pitch is a tossup with the .75mm, .8mm and 32 tpi gages - I can only guess.
Does anyone recognize this as an obvious standard, that I can consult to do it right? Any other words of wisdom?
thanks,
Bob