The Compur 2 came in multiple thread and tube sizes although yours, the Compur 2-5/II (aka Compur II 5/2), is the commonest one that Schneider used. The post war 165 Angulon, 240/420 Symmar, 135/3.5 Xenar and 150/2.8 Xenotar all use that shutter. The 180/4.5 Xenar used the larger Compur 2-6/II. I have a 1935 Schneider catalog that lists a Compur II, Compur IIS, Compur II 4/2, Compur II 5, Compur II 5/2, Compur II 6/1 and Compur II 6/2 so it is a bit of a minefield.
Yes, this is what I remembered but couldn't find a reference.
The Compur 2 came in multiple thread and tube sizes although yours, the Compur 2-5/II (aka Compur II 5/2), is the commonest one that Schneider used. The post war 165 Angulon, 240/420 Symmar, 135/3.5 Xenar and 150/2.8 Xenotar all use that shutter. The 180/4.5 Xenar used the larger Compur 2-6/II. I have a 1935 Schneider catalog that lists a Compur II, Compur IIS, Compur II 4/2, Compur II 5, Compur II 5/2, Compur II 6/1 and Compur II 6/2 so it is a bit of a minefield.
From Ole's table of shutter sizes:
A Compur 2-5/II has cell threads that are 45.8 x 40 t.p.i. (front and back) and flange threads that are 50 x 29 1/13 t.p.i. The overall length from the front of the front tube to the back of the back tube is 25mm.
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