Ultrasonic cleaner with timer. Serial no.100ax366. Model no.ME1.5 Ultrasonic cleaner with timer 1900-1980
Carton of hair brush cleaner, by John Hassall, 64 St. Paul's Churchyard, London, England. Hair brush cleaner
Prof. Thomson's "Magnet plate" - domestic cleaner, c.1940 Prof. Thomson's "Magnet plate" - domestic cleaner circa 1940