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Title: Glass excise hydrometer by oertling. Serial number probably [Go to resource]
Description: Glass excise hydrometer by oertling. Serial number probably 74. Mercury weight and paper scae. In mahogany box marked VR. Range 0 - 10. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hydrometer Temporal: 1870-1900 Source: Science Museum Creator: Oertling Identifier: 2005-440 Go to resource More Like this...
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