I know normally id measure internal tapers with gage balls, but this taper is too large and i dont want to try to source 3" balls. How would you go about measuring the angle and the diameter at the small end of the taper? I figure i can make a tapered plug to check diameter(i would size and angle the plug using two rings) but whats the best way to accurately measure the angle of this bore? The tolerance is only +-30' but i'd prefer to be able to reliably measure it within ~5'. The print should be attached. This is just a personal project for myself as a newer machinist so I would like to execute it as precisely as possible
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