Table CdC voltmeter with apparent mechanism - Industrial...
Table CdC voltmeter with apparent mechanism
Dial for vintage industrial electrical panel, circa 1920/1950
Function: Electromagnetic panel voltmeter measuring electrical voltage up to 250 Volts. Manufactured by the Compagnie des Compteurs de Montrouge, it was built into factory control cabinets, municipal transformer stations, public building machinery rooms or onto vintage railway rolling stock. The upper brass skylight reveals the pivot and the return spring of the mechanism.