Variable air condenser. Electrical instrument. Black metal box with orange semi-circular guage and dial on top. Scale 60-375 microfarads & 3 contacts. Variable Air Condenser. Large Black Box with orange smi-circular guage and dial on top. Three other contacts two as inputs (low and high potential or voltage) and one marked screen. An early form of what would later be called a capacitor, air condensers were designed to hold charge.
Asbestos Inspection - Non-Asbestos
