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the HMF Superthermolite was a multi purpose armature that could hold a mercury vapour arc discharge sunlamp unit with quartz tubes, a Kanthal heat element, a dull radiator or an incandescent lamp
1959
HMF Superthermolite, a multi purpose
armature that could hold a mercury
vapour arc discharge sunlamp unit with
quartz tubes, a Kanthal heat element, a
dull radiator or an incandescent lamp (as
shown).
building