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Library / Mathematics / On the History of Gunter's Scale and the Slide Rule During the Seventeenth Century / Braille

On the History of Gunter's Scale and the Slide Rule During the Seventeenth Century ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

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92,398 braille cells · 97 embossed pages at 40×25 · 346 unrepresentable characters omitted

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These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.