Key for small Cushman drill chuck

I got a Dumore "precision" drill press at the dump, but it's missing the
key for the Cushman chuck. I found a Jacob's chuck with matching
specs & I can get a chuck for it that should fit my Cushman. But, just
to be sure, I'd like to check that the tooth pitch matches.
Does any one have a Model 0 Jacob's chuck that they can look at for me?
I need the number of teeth on the sleeve. The Model 0 is the smallest
Jacob's makes: 0-5/32 (4 mm) capacity. The sleeve is .85" diam.
Reply to
Bob Engelhardt
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