Lens cells for a Compur 2 shutter

[E. von Hoegh]

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.

[Ole Tjugen]

Remember that there is also a tendency to lump everything into Compur 2, if it isn't one of the other "standard" sizes.

[coisasdavida]

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.

But Paul, the tube length is supposed to be what?

[Paul Ewins]

But Paul, the tube length is supposed to be what?

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.