Electric heating mantle for several flask sizes- "multi-mantle", replaced by newer model Electric heating mantle for several flask sizes- "multi-mantle" 1964
Electric heating mantle with built-in controller, type MR8411 rated 200/250V 60W, by Electrothermal Engineering Ltd., London, 1965-1975 (for use in semi-micro analysis with flasks up to 50ml capacity) Electric heating mantle with built-in controller 1960-1979
Electric heating mantle, replaced by newer model Jan. 65. Serial no.139477. Electric heating mantle 1964
Heating mantle serial no.128991 with heating regulator Heating mantle serial no.128991 with heating regulator 1963
Isomantle electric laboratory flask heater with energy regulator Isomantle electric laboratory flask heater 1958