5:13

Ein Drei-Pendel-Harmonograph

5:01

Home-made Harmonograph

2:38

Twin Elliptic Harmonograph

5:40

Gimbal experiments

8:05

An ingenious drawing machine you can build yourself - The Mini-Harmonograph - DIY JIG

8:21

Three Pendulum Harmonograph

5:06

3 Pendulum Harmonograph

5:28

drawing machine maios 9