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Title: Parallel rule, 6-inch, ivory and electrum (double parallelog [Go to resource]
Description: Parallel rule, 6-inch, ivory and electrum (double parallelogram form) License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: parallel rules
rules (drawing)Temporal: 1876 Source: Science Museum Creator: W. F. Stanley & Co. Ltd. Identifier: 1876-503 Go to resource More Like this...
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