Leartset » Spirograph http://leartset.com Design, Graphics, Posters & Typography Mon, 27 Feb 2012 11:53:35 +0000 en hourly 1 spirographs http://leartset.com/2009/07/spirographs-2/ http://leartset.com/2009/07/spirographs-2/#comments Fri, 03 Jul 2009 14:00:57 +0000 admin http://leartset.com/?p=1490 L6_24 Spirographs.pdf

L6_24 Spirographs.pdf

]]> http://leartset.com/2009/07/spirographs-2/feed/ 0 Spirographs http://leartset.com/2009/07/spirographs/ http://leartset.com/2009/07/spirographs/#comments Fri, 03 Jul 2009 10:16:51 +0000 admin http://leartset.com/?p=94 Read More →]]> Spirograph

Spirograph

Spirograph is a geometric drawing toy that produces mathematical curves of the variety technically known as hypotrochoids and epitrochoids. The term has also been used to describe a variety of software applications that display similar curves, and applied to the class of curves that can be produced with the drawing equipment (so in this sense it may be regarded as a synonym of hypotrochoid).

The name is a registered trademark of Hasbro, Inc. The Spirograph was invented by British engineer Denys Fisher who exhibited it in 1965 at the Nuremberg International Toy Fair. Extract from Wikipedia.org

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