Mechanical Principles
1930
Genre: Documentary
Awards:
Runtime: 11 min
Average vote: 6.6
Release date: 1930-02-05
Production Countries: US
Director: Ralph Steiner
Plot:
Cast:
Images
Crew:
![[REC]²](https://image.tmdb.org/t/p/w154/fJuIhJ5s8WGNZN3wuk9d84nMjXk.jpg)
Genre: Documentary
Runtime: 11 min
Average vote: 6.6
Release date: 1930-02-05
Director: Ralph Steiner