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bhjones
04-24-2007, 03:17 PM
Is there some logical system with the numbering/lettering of the various Jacobs chucks? They seem to be all over the board.

DR
04-24-2007, 04:05 PM
Probably.....

IOWOLF
04-24-2007, 06:22 PM
Some things are not for us mortals to know.

bhjones
04-24-2007, 09:54 PM
It would make me chuckle to find out some old guy in engineering was just giving them random number/letter designations.

cybor462
04-27-2007, 11:52 PM
Maybe there is more to it than that. Makes it harder to make knock offs. If you can't figure out the numbering system would be hard to knock them off.