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National Museum of Australia

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Collection Explorer


Jenny calipers

Object information

Physical description

A jenny caliper, which features a pair of arms connected by a circular hinge at one end. One arm is straight, with a slight hook at the base and the other is bent, with an adjustable scribing point at the base. the caliper is engraved with "A.G.ROSS." and "R. Stanley South Aus".

Statement of significance

This timber and canvas toolbox and associated tools belonged to Alfred Ross who worked with the Government Ordnance Factory in Maribyrong from 1933 until his death in 1979. The Maribyrnong Defence Explosives factory complex which includes the Ordnance Factory has been placed on the Register of the National Estate.

The Neil, Lynette and Barry Ross collection makes an important contribution to the documentation of industrial Australia, particularly to the role of a federal government agency in the industrial development of Australia during wartime and peacetime.

Object information

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