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Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids. The well-known toy version was developed by British engineer Denys Fisher and first sold in 1965.
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Spirograph | Availability | 1965–present | 1.00 | infobox |
| Spirograph | Company | Hasbro | 1.00 | infobox |
| Spirograph | Country | United Kingdom | 1.00 | infobox |
| Spirograph | Invented by | Denys Fisher | 1.00 | infobox |
| Spirograph | Materials | Plastic | 1.00 | infobox |
| Spirograph | is a | geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids | 0.90 | text |
| rings | instance of | the Super-Spirograph introduced additional shapes | 0.80 | text |
| triangles | instance of | the Super-Spirograph introduced additional shapes | 0.80 | text |
| and straight bars | instance of | the Super-Spirograph introduced additional shapes | 0.80 | text |
| Spirograph | related to history | In | 0.60 | section |
| Spirograph | related to history | Greek-born English | 0.60 | section |
| Spirograph | related to history | Peter Hubert Desvignes | 0.60 | section |
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