[Boatanchors] Rotary Switch Question

[J. Forster]

I('ve got a problem replicating a WW II vintage Centralab switch, and am
not really getting very far as yet.

Does anybody have (or know of) a source for  the data for or a graph of
the opening and closing of the contacts on a rotary switch of BOTH the
shorting and non-shorting type v. shaft rotation angle? Data for a switch
w/ 30 degree indexing would be preferred.

Thanks,
-John