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Title: Crank pen for drawing curves, made by W.F. Stanley [Go to resource]
Description: Crank pen for drawing curves, made by W.F. Stanley License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: crank pens
curve drawing instrumentsTemporal: 1876 Source: Science Museum Creator: Stanley, William Ford Identifier: 1876-979 Go to resource More Like this...
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