How many impossible objects can you find in this engineering drawing?
There are 3 impossible rings, 1 impossible square, and the Devil’s Trident. Can you identify all five objects? Feel free to submit this plan to your engineering department. It may keep them busy for the rest of time.
Notes
Displays a still image.
Alt titles
Impossible Engineering Plan; Impossible Plan; Rectabular Excrusion Bracket
Source
http://www.sandlotscience.com/Impossible/Impossible_Plan.htm (via web.archive.org)
Final Assembly screenshots
