a website collaboration between Science Service and the Smithsonian Institution

1960 - an engineer replaces dry cell battery with constant voltage reference supply in temperature controller-recorder

REPLACING BATTERIES

CD 2055027 E&MP3.018

Batteries

ca. 1960

Engineer replaces dry cell battery with constant voltage reference supply [CVR-10] in temperature controller-recorder.

Installation requires no modification of the instruments, 

Original Caption by Science Service
Performance Measurement Co.



National Museum of American History

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