Say, Chuck, I suppose once you set up your boring rig and bored a few, you could "ticket" them up into calamari and measure them with the King's fingernail paring or whatever. But I'd bet you're right that there was a less destructive method of trying the accuracy of the boring machine and checking on struck tapers. I'd be surprised if the E.A.I.A. didn't have this paraphenalia in context in an old article? I'll try to find out.

jack