Scalebuoy Automotive Unit for placing inside car radiator hose, consists of two tear drop shaped glass containers with mercury inside and held in a wire holder, with cardboard cylinder packaging with inner layer which has instructions written on it, black cardboard with silver writing and red lining.The Scalebuoy Company Boston USAsciences, instruments-general, scalebuoy

Letter, typed on paper with printed letterhead of Scalebuoys Limited. Astor House, Aldwych, London, W.C.2. Letter mentions the enclosure of a list of Foreign Agents. Also mentioned is the use of Scalebuoy water for the canning industry.sciences, instruments - general, scalebuoy, bill ashman collection - correspondence, scalebuoys limited, h c turner, scalebuoy company boston, w h cunningham & hill ltd, bendigo electronic company, scalebuoys (n.z.) limited, herr otto wulfrath, societe des chaudieres electriques francaises, don watson & co ltd, major t d hackett, commandante v betteloni, w h holt white, findlay durham & brodie, zuberbuhler & co, g kolovitch, g m b close, g p barker, l f norris