Steel Rule

"Steel Rule" is an instructional documentary primarily focused on the practical use of steel rules and related tools in precision measurement and metalworking, though the provided summary includes unrelated content that suggests a mix-up. The film is designed to teach viewers how to effectively read steel rules, utilize flexible hook and rule-type gauges, lay out holes using a combination square and scribe them with dividers, and employ inside and outside calipers to transfer dimensions to and from steel rules. Through detailed demonstrations, it emphasizes accuracy and technique in mechanical drafting or machining tasks, making it a valuable resource for vocational training or technical education.
However, the summary also mentions two entirely different topics—embroidery techniques (including needlepoint and appliqué) and the physiology of menstruation with hygiene advice—which seem erroneously included. Assuming these are unintended, the core focus remains on the steel rule and precision tools, offering a clear, hands-on guide for students or workers in industrial or technical fields.