![](http://www.alamy.com/thumbs/6/91B43310-0E32-4BDE-AFA5-5FC53BECB660/2XF3KGX.jpg)
Cutaway model of a rotary engine with a board in the background. German text on chalkboard: "Der Wankelmotor" ("The Wankel motor").
Size: 6000px × 4000px
Location: at school
Photo credit: © Illustronaut / Alamy / Afripics
License: Royalty Free
Model Released: No
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