Hi MMD'rs.  To stretch this thread out a little further -- The
old-timers among us will probably remember phonograph strobe discs.
I have found one of these old discs (for you younger sprouts, these
discs tell you when the turntable speed is correct) and I've made
copies.  I'll be glad to send a disc, for free, to anyone who sends
me a mailing address.

Regards, Bill Mintz