I used photoshop for the pictures and a spreadsheet to convert the required equation to a deflection in degrees for all the required solutions
I then used the rotate function to rotate a vertical line the required number of degrees from the centre which i then used as the base for the mark on the whiz wheel
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"Enemy submarines are to be called U-Boats. The term submarine is to be reserved for Allied under water vessels. U-Boats are those dastardly villains who sink our ships, while submarines are those gallant and noble craft which sink theirs." Winston Churchill
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