Safes, Tennis Ball Launchers, and Music Boxes
- Episode aired Feb 11, 2016
- TV-G
- 21m
How does a safe, a tennis ball launcher, and a music box really work? Go inside the incredible machinery behind these everyday objects to see their extraordinary inner workings.How does a safe, a tennis ball launcher, and a music box really work? Go inside the incredible machinery behind these everyday objects to see their extraordinary inner workings.How does a safe, a tennis ball launcher, and a music box really work? Go inside the incredible machinery behind these everyday objects to see their extraordinary inner workings.