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Monroe LA5-200 adding machine

Made 1950s

This object is part of a collection relating to the history and development of computing and other information technology assembled by Assoc Professor Allan Bromley of Sydney University, comprising of calculators, mechanical and 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 20...


Mechanical calculator, Monroe LA5-200 adding machine, metal / plastic, made by Monroe Calculating Machine Company, United States of America, 1950s

This adding machine is made in green and black painted metal. The front face has one hundred numbered keys. On the left side is a red switch. On the left side is three red buttons. The array on the top of the unit is where the calculations are read.


162 mm
245 mm


Monroe Calculating Machine Company, USA


Donated through the Australian Government Cultural Gifts Program in memory of Associate Professor Allan Bromley, 2010
20 January, 2010

Cite this Object

Monroe LA5-200 adding machine 2015, Museum of Applied Arts & Sciences, accessed 25 November 2017, <>
{{cite web |url= |title=Monroe LA5-200 adding machine |author=Museum of Applied Arts & Sciences |access-date=25 November 2017 |publisher=Museum of Applied Arts & Sciences, Australia}}

This object record is currently incomplete. Other information may exist in a non-digital form. The Museum continues to update and add new research to collection records.

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