Black and white photo a some scale which was removed from the boiler at Knox Home, Auckland, N.Z. A ruler is lying amongst the scale to show the size of the pieces. Photo taken by F. W. Young, Press & Commercial Photographer. Written on the back: Scale removed from Boiler at Knox Home Auckland N.Z. September 1937. Scalebuoy Treatment been used approx 7 months.sciences, instruments - general, scalebuoy, bill ashman collection - correspondence, knox home auckland, f w young

Typed carbon copies of two letters stapled together. The first letter is from W. H. Noe to R. H. A. Abbott and dated 25 July, 1938 discussing Scalebuoys and who was using them. The second letter is from W. H. McCorkingdale to Mr. Hough, Works Manager, Lever Bros. (N.Z.) Ltd., dated 25 July, 1938. Letter mentions the use of Scalebuoys, application, companies using them, and he asks if considering Scalebuoys at the works to send him some information.sciences, instruments - general, scalebuoy, bill ashman collection - correspondence, scalebuoys new zealand limited, r h a abbott, scott's hotel melbourne, hardley's works, lever bros of australia, mr hough, w h noe, hawke's bay farmers' freezing company, mater misericordiae hospital auckland, st joseph's, whangarei dairy company, maungatapere dairy company, n z railways, the union oil soap & candle company, knox's home, moody's dye works, ellis & burnand (sawmillers), walter buchanan ltd, findlay's gold krust bakeries, kaiticke dairy company, pennsylvania rubber company, page-hersey tube company, w h mccorkingdale

Two copies of a typed letter, printed on paper with a printed letterhead, dated 17 September, 1937. Letter is from the Secretary of Knox Home to the Managing Director, Scalebuoys (New Zealand) Ltd. He mentions he has enclosed a cheque for payment of the Scalebuoy equipment and they were quite satisfied with it.sciences, instruments - general, scalebuoy, bill ashman collection - correspondence, n a duthie, national mutual life chambers auckland, knox home, scalebuoys (new zealand) ltd