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 ephemeral.

Allan Bromley was a lecturer and researcher at the University of Sydney Base 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 rebuilt of BE2 at the Science Museum London) and the Antikithera Mechanism and had extensive knowledge on calculators, analogue computers, logic, stereopsis, totalisators, clocks and time keeping and mechanical engineering.

Forecaster, St Louis, USA, c 1960

For use in family planning.

Circular slide chart with packaging, duplex, Wright Family Rhythm Forecaster, paper, made by Forecaster, St Louis, United States of America, c. 1960

Slide chart, circular, Wright Family Rhythm Forecaster for predicting ovulation periods.

Instructions on face of chart, plus adjustments for leap years. Set in fertile and sterile cycles (ranging from 24 days to 32 days) over the year.

In original envelope posted to what was probably the Australian distributor, includes note to distributors.

Made: 1960

Wright Family Rhythm Forecaster

2010/1/139

1960

178 mm