اسپیروگراف

Also known as Magic Ruler, Marvellous Wondergraph

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.

Key facts

Toy.name: Spirograph
Toy.image: 250px 250px
Toy.caption: Spirograph set
Toy.inventor: Denys Fisher
Toy.country: United Kingdom
Toy.company: Hasbro
Toy.from: 1965
Toy.to: present
Toy.materials: Plastic
Toy.website: https://www.playmonster.com/brands/spirograph/

via Wikipedia infobox

Official website

Spirograph – PlayMonster

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Link to the official site · 2,284 chars · not written by Vinony

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