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Title: Sectional drawing full size of Webster's patent 1853 Diaphra [Go to resource]
Description: Sectional drawing full size of Webster's patent 1853 Diaphragm Pressure Gauge, in frame 21" x 7 1/2" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1918-290 Go to resource More Like this...
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