This is a vintage 1973 Weston AC / DC Wattmeter Model 310 (Scale is from 0 to 1 Kilowatt) - dated September 14, 1973 Certified by W. De Ring. It was discovered in a Wisconsin basement and is assumed fully functional. This was produced by Weston Instruments Inc. of Newark, NJ USA and that information is prominent on the face of the unit. You will also find Ametek / Lamb Electric displayed on the case.
The wooden case on these units are in pristine condition considering their age, only slight scratches and paint splatters, and the bakelite housing of the instrument itself could be brought back to like new condition with a little TLC (once again, paint splatters). The hinges are fully functional and like new! I did not make an attempt to clean it, not wanting to do any damage to this historical artifact. This particular meter shows a chip out of the bakelite just to the lower right of the display.
I also have an ohmmeter by Weston, Number 4282, with the original leads.
Collectors, please email with any other questions and for additional pictures!
