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Collection
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Place
Material
Date

Voltage data logger

Pitman data logger

1970-1980

Shaft encoder with integral 'Thalimedes' data logger, 1997

1997
Small illuminated unit for monitoring audience usage marked 'BBC or ITV', made by Television Audience Management Limited, London, 1950-1965

Unit to Monitor the Audience Usage

1950-1965
Perkin-Elmer 240 elemental analyser, complete with gas purification furnace, recorder and datalogger.

Perkin-Elmer 240 elemental analyser

circa 1980