Template:Motd/2019-06-01 (en)

Animation of gears including epicyclic gears and a rack and pinion

 Template:Motd/2019-06-01

This is the English translation of the Media of the day description page from 1 June 2019.

Descriptions in other languages:

• Motd/2019-06-01 (cs)
• Motd/2019-06-01 (de)
• Motd/2019-06-01 (en)
• Motd/2019-06-01 (mk)
• Motd/2019-06-01 (pl)
• Motd/2019-06-01 (ru)
• Motd/2019-06-01 (uk)