D Vr: Dynometer Tests for 4-8-2 steam locos. X30, X32 & X35, presented as extremely long rolls of paper (65 cm wide and many metres long), recording various 150km return journeys Melbourne-Bendigo, to test South Maitland coal. The rolls show a test dated 1/11/1937 and other tests of similar dates. These are important as only one roll exists for every test made! (7 rolls)