Black and white silhouette touch vacuum cleaner device with couple of wheels beneath the pump, long soft tube tapped by a suckable pipe to cleaning the dust and dirt vacuum cleaner vacuum technics Silhouette Black & White Vacuum Cleaner
Illustration taken from "THE RADIO AMATEUR'S HAND BOOK" 1922 amp amplifier electrical Vacuum Tube Oscillator
Antique portable vacuum tube radio circa 1950's. Used two 1.5 Volt batteries and one 67.5 Volt battery radio electronics vacuum tube Antique Radio 02
Black and white silhouette touch vacuum cleaner device with couple of wheels beneath the pump, long soft tube tapped by a suckable pipe to cleaning the dust and dirt vacuum cleaner vacuum technics Silhouette Black & White Vacuum Cleaner
Illustration taken from "THE RADIO AMATEUR'S HAND BOOK" 1922 amp amplifier electrical 50 Watt Oscillator Vacuum Tube
Black and white silhouette touch vacuum cleaner device with couple of wheels beneath the pump, long soft tube tapped by a suckable pipe to cleaning the dust and dirt vacuum cleaner vacuum technics Silhouette Black & White Vacuum Cleaner