shutters compatible with 7" Dagor?

[Luis-F-S]

Have a 6” Golden Dagor mounted by Steve Grimes before he left the planet. Sent him the loose cells and a Copal 0 and he did the rest. A really fine mounting job.

[David Lindquist]

I don't know when C.P. Goerz American Opt. Co. discontinued the 7 inch Dagor. It is shown in their 1951 catalogue; it was available in a No. 3 Rapax or a No. 2 Acme. It is not in their 1959 catalogue. (Catalogues respectively on Cameraeccentric and Pacific Rim Cameras websites.)

The 1951 catalogue explicitly states that their lenses are coated.
David

[David Lindquist]

Have a 6” Golden Dagor mounted by Steve Grimes before he left the planet. Sent him the loose cells and a Copal 0 and he did the rest. A really fine mounting job.

Interesting. Given that he had the loose cells do you have any idea how he determined the correct separation?

David

[Steven Tribe]

Ah, now I see the shutter is labeled "Compound". That logo (if that's what it is) on the speed dial; it looks sort of like a paper clip, looks familiar but I can't place where I've seen it.

David

C.P.Goerz.

In the good old days, there was a lot of joint production of shutters for camera makers and lens makers. Things became a little tense with the disappearing market of the 1920’s!

[Tin Can]

Optical Bench

Interesting. Given that he had the loose cells do you have any idea how he determined the correct separation?

David

[Tin Can]

Complete Optical Bench and Attachment Set with 20 Lab Activities

https://www.hbarsci.com/products/ph0...RoCQNUQAvD_BwE

Yes it is a cheap set, but you can learn basics

The usual suspects will object loudly

[armentor1@mac.com]

Thanks all, will try to make this one work with some maintenance

[David Lindquist]

C.P.Goerz.

In the good old days, there was a lot of joint production of shutters for camera makers and lens makers. Things became a little tense with the disappearing market of the 1920’s!

Thank you, that's where I would have seen it.

David

[David Lindquist]

Complete Optical Bench and Attachment Set with 20 Lab Activities

https://www.hbarsci.com/products/ph0...RoCQNUQAvD_BwE

Yes it is a cheap set, but you can learn basics

The usual suspects will object loudly

Whoever could you mean?

David

[Luis-F-S]

Interesting. Given that he had the loose cells do you have any idea how he determined the correct separation?

David

No idea but it works. I suspect he had an optical bench. L