Weston galvanometer, model 375, 30-0-30
1926
Weston Photronic Exposure Meter Model 650. Photoelectric exposure meter
1935
Weston model 440 galvanometer
1926
Direct reading two-range voltmeter
1900
Weston direct-reading alternating and direct current voltmeter
1936
Weston moving-coil ammeter, 1889-1900
1889-1900
Moving coil portable galvanometer
1890-1891
Early moving coil voltmeter
1889
Weston thermoammeter
Moving-coil voltmeter
1951
photo-electric exposure meter model 627
circa 1938
Weston Photronic Exposure Meter
Standard cell, model 4, serial no.3653
1900
Weston Photronic Exposure Meter
circa 1934
A.C. ammeter model 155
Weston Standard portable alternating and direct current wattmeter no.302
D.C. galvanometer relay model 30 no. 24904
1939
Weston thermo-milliammeter model 425
Ammeter shunts
Model 617 Universal exposure meter with leather case and strap
Benjamin 'Model B' Lightmeter
1930-1950
Model 603 illumination meter by Weston Electrical Instrument Co.
1928-1938
Weston Electrical Instrument Co Synchroscope 60Hz
Single-phase portable a.c. and d.c. wattmeter
1926
Weston Cine exposure meter
Ammeter model 45 no.457 by the Weston Electrical Instrument Co.
1900-1919
Weston direct-reading laboratory-standard millivoltmeter no.780
1920