Rule, The (Percentage, Proportion, Squares, & Square Roots)

Duration: 21 min

Creator: U.S. Office of Education

Format: Filmstrip

Sound: Sound

Description: Shows how to use the "B" and "C" scales of slide rule to calculate proportions and percentages; how to calculate squares and square roots; how to determine placing of decimals after square root is extracted. Simple problems illustrate methods.

Complete Record: Category: Engineering Subcategory: Blueprints Type: Slide Film Source: USOE Castle Catalog number: OE354 Price: $27.71. Format code: 16sd

Metadata Source:Index of Training Films 1946