Paul ,It came in a box of assorted tools we bought from an Auction of equipment at the State Rail Locomotive Workshop at Chullora when they relocated to private contractors at Auburn in the mid 90s along with some huge ring spanners they must have needed for working on the steam locos, never found a use for the larger ones but they make an interesting taking point ,like the huge nuts and bolts at the base of the Sydney Harbour bridge ,if they ever need tightening up we have a spanner for them
