Advanced Thermometer

by tom - uploaded on March 16, 2009, 11:54 am

Thermometer with 2 scales. Old-fashioned design. "Fig 11: A well-made commercial thermometer" black and white re-trace from: GENERAL SCIENCE BY BERTHA M. CLARK, PH.D. (Gutenberg EBook 16593)

externalsource grayscale old temperature thermometer trace
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