Spirograph (nonfiction): Difference between revisions
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== Fiction cross-reference == | == Fiction cross-reference == | ||
* [[Weaponizing Spirograph]] - [[documentary film]] by [[Ridley Scott]] | |||
== External links == | == External links == | ||
Revision as of 07:45, 31 May 2016
Spirograph is a geometric drawing device (nonfiction) that produces hypotrochoids and epitrochoids, which are varieties of roulette curves (nonfiction).
Description
It was developed by British engineer Denys Fisher and first sold in 1965.
The name has been a registered trademark of Hasbro Inc. since 1998 following purchase of the company that had acquired the Denys Fisher company.
The Spirograph brand was relaunched with original product configurations in the USA in 2013 by Kahootz Toys and in Europe by Goldfish and Bison.
Nonfiction cross-reference
Fiction cross-reference
External links
- Spirograph @ Wikipedia