Site.DemonstrationPinwheelMechanism History

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22 July 2013 by 58.6.237.118 -
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(:title Pinwheel Calculator Mechanism:)
%center% http://meta-studies.net/pmwiki/uploads/PinwheelDemo.jpg

Pinwheel mechanism of the Walther Calculator in this collection.
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Page last modified on 22 July 2013