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> Old bell system test set r-9572 headset
Old bell system test set r-9572 headset
This is an old Bell System Test set, probably from the 1960's or older. It has a wire headset, an ear piece, and two probes, one is an alligator clip at the end. It has a Bell System number, R-9572. I believe it was used to check for -48 volts. It will click if you use it on a 12 volt automobile battery. Thanks for looking. Sales tax charged to California addresses.
