Assorted Voltmeters and Ammeters (c. 1942)

DC Voltmeters & Ammeters 

The voltmeters and ammeters (tools used to measure electrical voltage and current) represent the evolution of dial-style monitoring screens, spanning from recording studios to rugged military cockpits. The large meter on the left features a wide-view style that became a classic industry standard in the mid-1900s for its extreme clarity. Its scale, which includes a distinct red warning arc, was frequently used in radio broadcasting and early music studios to monitor volume levels and prevent loud sound signals from overloading the recording equipment. The two smaller, circular meters on the right are classic 2-inch cockpit instruments from the World War II era. Built to withstand high vibrations and extreme temperatures inside military planes, they featured black faces with high-contrast yellow markings so pilots could easily read their electrical status in the dark.

Donation: John & Carol Babina Jr.