Air and Gas Compressors, Vapor Condensers, and Liquid Evaporators

[ Radio Apparatus-Namely, Variometers, Variocouplers, Detector Panels, Amplifier Panels, Rotary Cam Switches, Rheostats, Dials, Knobs, Levers, Potentiometers, Grid Leaks,]Condensers, Coil Plugs,[Panel Plugs, Coupling Plugs, Coil Units, Crystal-Detector Stands, Rotary Lever Switches, Inductance, Coils, ] Tube Sockets [, Tuning Coils, Variable Resistances, and Complete Radio Receiving Equipments ]