Photo of Scalebuoy set-up with the driving mechanism in factory. Also shown is the pipe work. On the back are two articles from Transport and Engineering in Australia December 16, 1937. One is about how the Scalebuoy came to be and the other is about Scalebuoy in the Victorian Railways locomotives. The name COCHRANE is embossed on two covers near the top of the large container.sciences, instruments - general, scalebuoy, bill ashman collection - correspondence, photograph of scalebuoy apparatus , victorian railways, kew gardens, mr abbott