Harmonograph

 

 

The harmonograph is a  machine that uses pendulums and gimbals to draw visual representations of musical harmony. Changing the ratio by adjusting the weights creates a variety of geometric patterns.


Mechanical Drawing Machine

 

 

 

Mechanical drawing machines produce visual representations of harmony. Complex geometric drawings are made through the use of pulleys, gears and epicyclic motion. These instruments demonstrate the harmonious union of engineering, physics, music and art.