Only says Super Pro on the front, as I remember I powered it up years
ago with a PS that had no negative voltages.

Ray

Chuck wrote:
Which model Super Pro ?? At least 4 major designs have carried the Super
Pro name, dating from around 1935 to 1960.

-Chuck
"Ray Collins" *remove wrote in message
...

Looking for dials and the slip rings that comes off the knob?
Also a power supply of can I adapt a HP-23 to it?