6 replies to this topic

[vietspace]

I just bought this one in Vietnam yesterday.
All parts is shown in the photo, but the mount and tripod have been sold to someone else, I have just only the tube
It has a diameter 70mm and a focal length around 400-500mm, there is only objective lens without eyepiece and focuser or maybe they have been lost.
The strange thing is near the end of this tube has an opaque white plastic plate, only bright light can see through. I used the sun to test as shown in the photo
I think this is a military equipment and maybe It was used in the Vietnam War. Have you seen this device yet?

 

 

[vietspace]

 

 

[Tapio]

The cat is as amazed as I am.

[vietspace]

After searching in internet many times, I got the answer. This is an old collimator scope.

The M1A2 Infinity Aiming Collimator is an optical instrument used for establishing an optical reference from which weapon deflection angles can be measured for indirect fire. It has an illuminated mil scale reticle which functions as an optical projection system that simulates a grid board type of infinity aiming target reference.

The M1A2, which is illuminated by a battery powered LED, replaced the M1A1 Infinity Aiming Collimator, which is illuminated by radioluminous tritium (3H) lamps.

The M1A2 Infinity Aiming Collimator is used with the M777 (155mm), M198 (155mm), M119 (105mm), M109 (155mm), and many howitzers no longer used by the United States but still in use by foreign militaries.

 

 

https://www.seilerin...ing-collimator/

 

http://www.1stbn83rd.../Collimator.pdf

Attached Thumbnails

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Edited by vietspace, 02 April 2021 - 03:38 AM.

[Muffin Research]

So does it need electricity? would there be something projected onto the opaque plastic plate? like the reticle or the grid? 

[MikeMiller]

So, it seems all you need to go with this is a howitzer.

[TareqPhoto]

I think the cat remembered something about it, checking it out, wait the answer soon