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Description
or collections
but is intact (mercury as well)
This thermometer is in good working condition
Steel helmet worn by Civil Defense volunteers during WW2
KM - 301633 - 071123
c. 1960s Welch Demonstration Micrometer film canister or collectionsOversized classroom demonstration model of a micrometer. This piece was manufactured by W. M. Welch Scientific Co. in Chicago, who in addition to lab equipment, specialized in large scale models of scientific instruments for educational purposes. They were in operation from 1880 until 1968 when they were bought out by The E. H. Sargent Co. This piece is in good condition, but exhibits a few spots of fading and dents. 36" H x 13" D x 17" H MM 4342
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