Drawing table showing a graduated T-square in use on a diagram. On the table are compasses and Hulsius's planimeter incorportaing a magnetic compass. From Levinus Hulsius Instrumentorum Mechanicorum, Frankfort-am-Main, 1605. Acknowledgement must be made to the Ann Ronan Picture Library and EP Goldschmidt & Co Ltd.

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

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