Four copies of an article reprinted from Smith's Weekly, November 30, 1940 titled Magic Mercury Bulb Does Many Marvellous Things. It mentions the inventor, Hartley Abbott, the use of the scalebuoy by the Victorian Railways. There is a brief explanation of how the scalebuoy works. It was used to treat hard water and was claimed to have certain health benefits. The inventiveness of the Abbott family is also mentioned.sciences, instruments-general, scalebuoy, bill ashman collection, magic mercury bulb, hartley abbott, scalebuoy, victorian railways department, buckingham palace, auckland general hospital, melbourne university, mr n brearley, glamis castle, lancet, crown hotel, smith's weekly

10 double sided leaflets titled Magic Mercury Bulb, produced by F A Stevenson 62 Honeysuckle Street Bendigo.sciences, instruments - general, scalebuoy