Assorted Voltmeters and Ammeters (c. 1942) Models on Display:Voltmeters and Ammeters hidden heart murmurs and save

hidden heart murmurs and save them onto magnetic disks to compare later

"Street Racer" Cartridges

it helped transition video games from a high-tech novelty into a permanent fixture of the American living room

Neatly built into a rugged wood and faux-leather carrying case with a built-in scroll chart for quick reference

Caton Linesman Telegraph Set (c

Assorted Voltmeters and Ammeters (c. 1942) Models on Display:Voltmeters and Ammeters hidden heart murmurs and saveDC 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