It has an unlabeled toggle switch on the back and 2 pin female plug as well
as phone jack. The wire to the phone jack has been clipped?
hank
"Alan Douglas" adouglasatgis.net wrote in message
...
Hi,
That's a model 631B (or BL, if it has a toggle switch on the back
marked "direct - slow," for 1/10 range.

73, Alan