Rule, The (Percentage, Proportion, Squares, & Square Roots)
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✎ Suggest a correctionShows 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 catalog record
Category: Engineering
Subcategory: Blueprints
Type: Slide Film
Source: USOE Castle
Catalog number: OE354
Price: $27.71.
Format code: 16sd
Subcategory: Blueprints
Type: Slide Film
Source: USOE Castle
Catalog number: OE354
Price: $27.71.
Format code: 16sd
Sources
- Index of Training Films 1946 — title, creator, length, format, sound, description, catalog record
Record added 2026-07-09 22:50:35 · Suggest a correction