Trammel of Archimedes
traces path of ellipse
Calculators
Not puzzles but interesting mechanical devices. The fun here is to see how they work.
Do Nothin' Machine
| Maker Toys From Times Past |
Consul the Educated Monkey
| Maker The Educational Toy Manufacturing Co. |
"It makes no difference to the monkey whether children are bright or stupid, he never loses patience at having to answer their questions."
Turing Tumble
| Maker Upper Story |
Squarely Nuts
| Date 2024 |
| Maker Puzzle guy |
| Designer Oskar Van Deventer |
Square nut around around a square screw. Not a puzzle but rather kinetic art.
Amazing Dr. Nim
| Date 1966 |
| Maker E.S.R., Inc. |
Digi-Comp 1
| Maker E.S.R., Inc. |
Dellwood Creami-Rich Planets
Thought Reader
| Ad Van Houten |
Here is the Digi-Comp in action. So far have only tried the first program.