This Weston ammeter, model 1, measures electrical current in amps. It was manufactured by the Weston Electrical Instrument Corporation of Newark, NJ. It was calibrated in 1912, before it began to be used, and was guaranteed accurate when used at 72 degrees Fahrenheit.
(Inside of box) 23 x 19.7 x 11.7 cm
Matthew J. Brown
Martin Szewczyk, class of 1976
weston, ammeter, amps, measuring instrument