Hi Dutchman
I have the same result as you have. So that's good.
But I have calculated wheels from dia 200 to 250 and that gave me 2mm variation, then I moved up the center point of the scale 1mm to halve that error. Maybe it's not quite right to do that? but as you point out, there are more parameters to consider. It is also a bit difficult to hit the right spot with the ruler. Do you have any other solution to reduce the margins of error on?
I have the same result as you have. So that's good.
But I have calculated wheels from dia 200 to 250 and that gave me 2mm variation, then I moved up the center point of the scale 1mm to halve that error. Maybe it's not quite right to do that? but as you point out, there are more parameters to consider. It is also a bit difficult to hit the right spot with the ruler. Do you have any other solution to reduce the margins of error on?