This object is part of a collection relating to the history and development of calculating devices assembled by Assoc Professor Allan Bromley of Sydney University, comprising mathematical instruments, slide-rules, mechanical and electronic calculators, electronic analogue computers, computer components, kit computers, education computers, and associated ephemera.

Allan Bromley was a lecturer and researcher at the University of Sydney Basser Department of Computer Science from 1978 until his untimely death in August 2002. He specialised in Computer Architecture, Computer Logic and in particular the History of Computing. He was regarded as the world authority on Charles Babbage's Calculating Engines (instigating the building of the Difference Engine No.2 at the Science Museum London) and the Ankithera Mechanism and had extensive knowledge of calculators, analogue computers, logic, stereopsis, totalisators, clocks and time keeping and mechanical engineering.

Punch card calibration device, metal / plastic, made by IBM (International Business Machines Corporation), c. 1960s

IBM Card Punching Equipment Registration check device. Precision metal card carrier for checking punch positions on gauge card. In plastic case with IBM logo embossed into it. Each column of the card bed is marked with a column number and each row is marked with a row character or number. The points where the punched holes in the cards should be are coloured in black. There are a set of instruction for use on the back, noting that all card punching equipment should be checked each day.

Made: 1955 - 1965

IBM embossed logo in plastic cover, numbers and characters on card bed surface, instructions for use on back

2010/1/182

1955 - 1965

107 mm

10 mm