221/60 for sale, brand-new and used.

Vintage EICO Model 221 VTVM Vacuum Tube Volt Ohm Meter In good used condition, brought up slowly to 60 volts on a variac, it's working, but I have not used it in service... Includes grounding test lead, original power cord, all tubes and original leather handle. Sold as/is.

I googled the patent number and found the following info. The figures on the patent sketches looks slightly different than the piece. Patent number: US 3497806

YOU ARE BIDDING ON pH Meter For Plating, pH Range -2.00 To 16.00, pH Accuracy +/-0.02, pH Resolution 0.01, Temperature Range 23 To 221 F, Temp Range -5 To 105 C, Temp Accuracy +/-1 Deg 23 To 140 F, +/-2 Deg 140 To 221 F, +/-0.5 Deg -5 To 60 C, +/- 1 Deg 60 To 105 C, LCD, Two Line Display, Automatic Temperature Compensation Range, Auto Power Off, Features Stability Indicator, Stainless Steel Electrode, Includes pH Electrode, 3 AA Batteries, Instructions And Carrying Case.