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Originally Posted by joegrundman
I'm afraid this is not correct, because the method you mention is not actually how the wheel does it, although the effect is the same (the manual is misleading in this respect, but i only actually learned how it works when i built the new version from scratch, rather than using templates). In order to make wheels for GWX and stock i've had to make three different wheels. If you use the wrong one, you get the wrong answer.
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Unless your wheels function in some way fundamentally different from the one in OLC GUI I'm correct and you are wrong
I'm not saying that it was a waste of time to make different wheels, because you get the range wrong if it's not scaled to the magnification. But the AOB will always be correct if your measurements and handling is correct.
The thing is that the range is NOT important if you just want AOB.
1. You measure range by aligning observed marks with 90
2. Read range at mast height (or double mast height in OLC GUI)
3. Turn range to real length of target.
4. Read AOB at the observed ship length (or half ship length in OLC GUI)
The thing is that in part 3 it doesn't matter if the range is correct or not if all you want is the AOB. What you really do is turn the wheel from mast height (on outer scale) to ship length (on outer scale). Both of those values are independent of magification and therefore you always turn that wheel an set number of degrees for a specific target.