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Title: Twaddell's No. 1 hydrometer, scale 0-24. [Go to resource]
Description: Twaddell's No. 1 hydrometer, scale 0-24. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hydrometer Source: Science Museum Creator: Dring and Fage Identifier: 1876-548/1 Go to resource More Like this...
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