Probably the only way to accurately make the plate.
When I made a new graduated dial using a rotary table mounted to the face plate of my old South Bend it took quite a bit of math to work out the spacing. More important I had to pay very close attention to which graduation I was making.
When I made a new graduated dial using a rotary table mounted to the face plate of my old South Bend it took quite a bit of math to work out the spacing. More important I had to pay very close attention to which graduation I was making.