I beg to differ....
From the 25pdr User Handbook re. the anti-tank sighting telescope;
" ..the divisions on the right being marked with an L and those on the left with an R."
If the target ( tank ) is crossing in front of the gun from left to right, the gun will have to be aimed further to the right ( aim-off ). So in the sight picture the central cross will be forward of the tank to the right, but the aim-off divisions, between the central cross and the target, will be read off the left scale!
So the L and R on the scales do not show how the telescope should be oriented, but rather which scale to use according to the direction the target is taking.
With an approaching target no aim-off need be applied, so the central cross is laid directly on the target.
Hope I did not muddy up the waters.....
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George Cross Island
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