Machines
Criswell, John F
Industrial and advertising
Clips are not offered for this film: no licence or public-domain mark is recorded for it.
Parts
About
Demonstrates simple machines and how they work to lighten man's work. Includes wheel-and-axle, lever, inclined plane, pulley, wedge and screw. To license this film and get a higher quality version for broadcast/film purposes, contact A/V Geeks LLC .
Human-made No record of this work says a model made it. What this means.
- Archive
- Internet Archive, in Ephemeral films
- Licence or status
- The Internet Archive states none for this item.
- Credit
- Criswell, John F
- Who can watch
- The archive gives no rating. Invisible Network shows it to Tweens profiles and older, judged from its collection and subjects. How films are placed
