The steel rule is the most simple and basic tool to measure length. This World War 2 era film introduces the viewer its various uses and varieties.
This is part 1 of a series, known as MEASUREMENT in the METALWORKING INDUSTRY.
Produced by Loucks & Norling Studios, for the Federal Security Agency and the US Office of Education 1941

Subtitulado por Daniel Rocha México

This digital video was produced from a surviving 16mm movie print by the Museum of Our Industrial Heritage. http://industrialhistory.org