Glass vacuum tube containing mercury, used as element in hospital sun lamp, by Hanovia Lamps of Slough in 1928 Glass vacuum tube used in a hospital sun lamp, Slough, England, 1928 1928
'Vi-tan' mercury vapour lamp with socket/cord and goggles, made by The Thermal Syndicate Ltd., Wallsend in 1936, sold as bringing 'health to the sunstarved', made of oak, chromium plates and quartz glass 'Vi-tan' mercury vapour lamp with socket/cord and goggles 1936
