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Title: Parallel rule and protractor with index arm, brass, patented [Go to resource]
Description: Parallel rule and protractor with index arm, brass, patented 1864-1865 by Simpson and Taylor and made by Brooklyn Arms Company, New York License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: parallel rules
combined scale protractors
drawing instrumentsTemporal: 1865-1875 Source: Science Museum Creator: Brooklyn Arms Company Identifier: 1987-1020 Go to resource More Like this...
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