This is not quite a tool but can anyone tell me what this Dead Weight Tester would have been used for? When it was given to me I was told it had come from the Victorian Railways diesel workshops. First thought was it would have measured leakage of fuel past injector nozzles or pump plungers. However the space below the weight would not allow these components to have been inserted. The downward movement of the weight is timed. This I think indicates testing leakage past a valve or plunger. The ADI test number indicates the accuracy of the testing was important. The tester has been fitted to a purpose built hinged box so must have been used in different locations, perhaps on board a locomotive or at different sites.