No.32 scope eye box

[Kov1985]

Hello everyone

I have a no.4T build (made out of a legit receiver and barrel, all the rest was parts) with a fake RSM mkiii scope. The eye box on this thing is utterly terrible. What I mean by that is If my sight alignment is not 100% correct, if I’m to the left or right an absurdly small amount, the site image blurs.

A very long time ago I owned a legitimate no32 mki, but I don’t ever remember having that issue with it. My question is that correct, are the originals that finicky with “eye box”? Looking to upgrade to a real one at some stage.

Information

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[Peter Laidler]

You have got mismatched ocular lenses. There is more to it than that of course but it is all to do with convergence. But as soon as I read that it is a fake No32, from my limited experience with them.........., it could be anything!

[Kov1985]

Thanks Peter. I suspect that’s case of it being a Chinese repro. It’s a shame your books on the subject aren’t currently in print, I’d pick one up if I could.

I’m going to pursue a real no.32 I think…

[Wernher von Beige]

Thanks Peter. I suspect that’s case of it being a Chinese repro.

I don't have any experience with the Chicom repros of the No. 32 scope, but I have some experience with the Chicom ZF4 as used on the German G/K43 rifles.

They are unmitigated trash.

To fix the problem, I bought a modern Czech-made repro by Meopta, the factory that made the originals under the name Optikotechna in P?erov (formerly Prerau in Greater Unified Germany). I had the X-ray security screeners at a local courthouse look at both, and I took photos of the display to see what's inside. The insides, especially the mechanical bits, are not even remotely similar.

The pointer on the crappy Chinese repro would describe an S-shaped curve as the range drum was cranked up and down -- and it was a different S going up compared to going down. Making the scope absolutely worthless. Basically, it looked like a classic hysteresis curve.

https://upload.wikimedia.org/wikiped...hysteresis.PNG

A long time ago, when buying tools, I learned that if a Chinese product seems to be OK, you're overlooking the hidden flaw. You'll find it sooner or later. But you will find it.

[Kov1985]

I don't have any experience with the Chicom repros of the No. 32 scope, but I have some experience with the Chicom ZF4 as used on the German G/K43 rifles.

They are unmitigated trash.

To fix the problem, I bought a modern Czech-made repro by Meopta, the factory that made the originals under the name Optikotechna in P?erov (formerly Prerau in Greater Unified Germany). I had the X-ray security screeners at a local courthouse look at both, and I took photos of the display to see what's inside. The insides, especially the mechanical bits, are not even remotely similar.

The pointer on the crappy Chinese repro would describe an S-shaped curve as the range drum was cranked up and down -- and it was a different S going up compared to going down. Making the scope absolutely worthless. Basically, it looked like a classic hysteresis curve.

https://upload.wikimedia.org/wikiped...hysteresis.PNG

A long time ago, when buying tools, I learned that if a Chinese product seems to be OK, you're overlooking the hidden flaw. You'll find it sooner or later. But you will find it.

Thanks mate, I will be replacing it with a real one in the near future.

[Brian Dick]

I have Peter’s book on the No.32 available if in need.

bdlltd@bellsouth.net

[Wernher von Beige]

Yes, I bought my copy from Mr. Brian Dick.
Do it, because you need to.