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Zeiss (blc) 12x60 Observation binoculars

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Optics Apprentice
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/13/2020 at 15:03
This is one of the new, repro eye relief adjustment screws that I have had made.

Rubbish phone photo, but you get the idea. For the clueless, the new one is on the top.

So now I have to prime it with etching primer and then paint and grease it ready to install in the binocular body, then finally I can get on with the painting.

If you get offered any COVID-19, 'JUST SAY NO!'




Edited by DPI - March/13/2020 at 15:17
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dogger Quote  Post ReplyReply Direct Link To This Post Posted: March/13/2020 at 15:10
Looks good Don. Is that the one machined from your CAD drawing?
God save the Empire!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/13/2020 at 15:15
It was from my CAD drawing, but not the one I posted, that was for a Pintle pin, which still in the workshop, they had hoped to have them ready to collect, but no luck. Anyways I told them there was no urgency on this.

I had five of the replacement screws made, thought might as well, what would be the point of just one, which I am going to use anyway?

The 70+ year old original I will keep safely in a box.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/18/2020 at 00:29
This video is showing how the new eye relief adjustment screw fits. Testing to see it it fits OK, using a spare Optical carrier tray I have.

The original is shown as well for comparison, but this has a slight bend making it stiff when turning.

The new one fits well


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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/22/2020 at 08:30
Well both good news and bad.

The old broken adjustment screw has been removed. but the internal thread was so damaged, I have had to re-drill and tap the hole again. to 10mm, 1.25. This means its oversized for the replacement screw, so it looks like I am going to have to fit a helicoil insert to bring back to size again, 8mm, 1.25  or get a new screw made for this set.

It does mean that I can blank off the opening for the moment and get on with the painting at least.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/23/2020 at 04:10
So here is all the metal work primed up and ready for the next stage of painting.

I used gray etching primer, it looks a little darker in the photo than it really is.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/23/2020 at 07:49
Here they are in the final paint finish, German Ordnance Tan, two coats on top of the primer. Now waiting for them finish curing. Dry to the touch at the moment.

Partially reconstructed the facemask.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/23/2020 at 09:23
Finished, at last!

When I get a moment I will set them up on a tripod and mounting outside and take a quick walk round video

As they were received:

As they are now








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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/25/2020 at 09:28
Here they are mounted on the tripod in the glorious Belgium sunshine ready to target enemy aircraft.








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Post Options Post Options   Thanks (0) Thanks(0)   Quote RifleDude Quote  Post ReplyReply Direct Link To This Post Posted: March/25/2020 at 09:46
Don, seriously, the amount of work and research you have put into these historical optics projects is truly amazing! You've amassed a tremendous amount of knowledge of the subject matter along the way! Outstanding work!

I always enjoy reading your posts, sir! Cheers!
Ted


Money can't buy happiness... but it's much more comfortable to cry in a Porsche than on a bicycle.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/25/2020 at 16:51
Glad you like them. sometimes I wonder as for a site called Optics talk, there does not seem to be much talk.

Don't have large format optics needing work at the moment, several smaller ones under way, ROSS and Barr & Stroud mostly.

Still keeping my eye out for Japanese WW2 stuff and Italian as I don't any in my collection. Its a matter of getting lucky on price and condition.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tahqua Quote  Post ReplyReply Direct Link To This Post Posted: March/25/2020 at 18:06
Now Italian stuff I would like to see!
Doug
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dogger Quote  Post ReplyReply Direct Link To This Post Posted: March/25/2020 at 19:37
Ditto what Ted said, well done Don!
God save the Empire!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DPI Quote  Post ReplyReply Direct Link To This Post Posted: March/26/2020 at 01:00
Well I have a friend in Italy who finds a lot of stuff for me. Currently he's in lockdown so that has kind of put everything on hold.

But he's catching up on repairing really, really old violins. And staying away from the infected, sounds like the Zombie Apocalypse.. Just waiting for the first one to show up.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote coyote95 Quote  Post ReplyReply Direct Link To This Post Posted: March/26/2020 at 11:50
GREAT STUFF !!!   Excellent     Thanks for sharing.
"Life is like riding a bicycle . To keep balance you must keep moving" Albert Einstein
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