The Breakroom > The Water Cooler

Mystery Measuring Stick

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S. Heslop:

--- Quote from: Joe d on May 19, 2015, 09:52:30 PM ---Found it!  This thing is a ventometer, used for adjusting military rifle sights

http://www.militaryrifles.com/britain/MHVentometer.htm

If you decide you don't need it, let me know :)

Cheers, Joe

(edited for crap spelling :doh:)

--- End quote ---

Thank god! This has been haunting me.

vtsteam:

--- Quote from: Arbalist on May 20, 2015, 04:11:40 AM ---Joe's link is pretty conclusive. I'm surprised though as it doesn't look robust enough and even looks bent in the first picture.
--- End quote ---

I'm guessing it was originally kept in a case and used for calibration, not active battle use. It would be pretty clumsy and slow for that. So robustness not an issue. It's basically a caliper.

Maybe this one, ex-service, was tossed in a drawer somewhere and got bent.

steampunkpete:
Well done Joe - champion WWW searching. :D

I had tried for hours and not found it.

I have to say that I feel pretty smug that functionally it is exactly what I deduced, except that I had thought it for artillery (father being RA) than for small arms. Now I know where to start I can do some more research on it.

Thank you very much Joe, and all the other contributors.

steampunkpete:
Further info:

Made by a company called "Allison-Gregory" or "Gregory-Allison" depending on source.

This one is for fine sight adjustment in the horizontal plane, and is associated with setting up the sight for windage. I have found an antique gun dealer who sells Ventometers, and has a few examples of this exact model. One in good condition, as mine is, sells for £65, so it isn't entirely without value.

The ventometers that work in the vertical plane are of a different design.

Joe d:
Pete:

Wish I could claim amazing Google-Fu powers, but as is much more normal for me, found it when I was
looking for something else!

But, at least now you know :thumbup:

Cheers, Joe

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