A Copper Artillery Elevation Scale

Please feel free to make an offer.

I believe this is an Artillery Elevation Scale, however I might be incorrect.

It's made from a solid thick piece of copper. There's no markings on it other than the gradient scale.

I believe it's likely to be WW2, but it's possible it could even be WW1.

One side is flat & looks like an end piece, this is at 58 degrees.
The other side is broken off.

If anyone knows what the scale means, or what it might have come from, please let me know. Thanks.

It's in a nice relic, which is fairly clean. It will polish up nicely.

In expected used condition for an item of this age & nature. 
A great piece of inexpensive history.

Please study the images, as they also form part of the description & please do your own research.

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