Library / Engineering & Technology / Instruction for Using a Slide Rule / Braille
Instruction for Using a Slide Rule ⠃⠗⠋ 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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28,581 braille cells · 31 embossed pages at 40×25 · 169 unrepresentable characters omitted
⠀⠀⠼⠛⠒⠀⠀⠀⠼⠁⠑⠁⠀⠔⠔⠀⠼⠙⠃⠀⠀⠼⠋⠉⠙⠃⠀⠀⠼⠓⠒⠀⠀⠀⠼⠋⠲⠑⠀ ⠔⠔⠀⠼⠁⠑⠀⠀⠼⠊⠛⠲⠑⠀⠀⠼⠊⠒⠀⠀⠀⠲⠼⠉⠙⠀⠔⠔⠀⠲⠼⠚⠓⠀⠀ ⠲⠼⠚⠃⠛⠃⠀⠀⠼⠁⠚⠒⠀⠀⠼⠛⠑⠀⠔⠔⠀⠼⠃⠋⠀⠀⠼⠁⠊⠑⠚⠀⠀⠼⠁⠁⠒⠀⠀ ⠲⠼⠚⠚⠚⠑⠙⠀⠔⠔⠀⠼⠁⠲⠙⠀⠀⠲⠼⠚⠚⠚⠛⠑⠋⠀⠀⠼⠁⠃⠒⠀⠀⠼⠁⠁⠲⠁⠀ ⠔⠔⠀⠼⠃⠲⠛⠀⠀⠼⠃⠊⠲⠊⠛⠀⠀⠼⠁⠉⠒⠀⠀⠼⠁⠲⠚⠁⠀⠔⠔⠀⠼⠑⠙⠀⠀ ⠼⠑⠙⠲⠑⠀⠀⠼⠁⠙⠒⠀⠀⠼⠉⠲⠁⠙⠀⠔⠔⠀⠼⠃⠑⠀⠀⠼⠛⠓⠲⠑⠀⠀⠀⠀⠀⠀ ⠠⠠⠙⠊⠧⠊⠎⠊⠕⠝⠀⠀⠀⠀⠠⠎⠊⠝⠉⠑⠀⠍⠥⠇⠞⠊⠏⠇⠊⠉⠁⠞⠊⠕⠝⠀⠁⠝⠙⠀ ⠙⠊⠧⠊⠎⠊⠕⠝⠀⠁⠗⠑⠀⠊⠝⠧⠑⠗⠎⠑⠀⠏⠗⠕⠉⠑⠎⠎⠑⠎⠂⠀⠙⠊⠧⠊⠎⠊⠕⠝ ⠀⠕⠝⠀⠁⠀⠀⠎⠇⠊⠙⠑⠀⠗⠥⠇⠑⠀⠊⠎⠀⠙⠕⠝⠑⠀⠃⠽⠀⠍⠁⠅⠊⠝⠛⠀⠞⠓⠑⠀ ⠎⠁⠍⠑⠀⠎⠑⠞⠞⠊⠝⠛⠎⠀⠁⠎⠀⠋⠕⠗⠀⠍⠥⠇⠞⠊⠏⠇⠊⠉⠁⠞⠊⠕⠝⠂⠀⠀ ⠃⠥⠞⠀⠊⠝⠀⠗⠑⠧⠑⠗⠎⠑⠀⠕⠗⠙⠑⠗⠲⠀⠠⠎⠥⠏⠏⠕⠎⠑⠀⠺⠑⠀⠓⠁⠧⠑⠀ ⠞⠓⠑⠀⠑⠭⠁⠍⠏⠇⠑⠒⠀⠀⠀⠀⠠⠑⠭⠁⠍⠏⠇⠑⠀⠼⠁⠑⠒⠀⠶⠼⠋⠲⠛⠚⠀⠸⠌⠀ ⠼⠃⠲⠁⠃⠶⠀⠀⠼⠉⠲⠁⠋⠀⠀⠀⠀⠠⠎⠑⠞⠀⠊⠝⠙⠊⠉⠁⠞⠕⠗⠀⠕⠧⠑⠗⠀⠞⠓⠑ ⠀⠙⠊⠧⠊⠙⠑⠝⠙⠀⠼⠋⠲⠛⠚⠀⠕⠝⠀⠞⠓⠑⠀⠠⠙⠀⠎⠉⠁⠇⠑⠲⠀⠠⠍⠕⠧⠑⠀ ⠞⠓⠑⠀⠎⠇⠊⠙⠑⠗⠀⠀⠥⠝⠞⠊⠇⠀⠞⠓⠑⠀⠙⠊⠧⠊⠎⠕⠗⠀⠼⠃⠲⠁⠃⠀⠕⠝⠀ ⠞⠓⠑⠀⠠⠉⠀⠎⠉⠁⠇⠑⠀⠊⠎⠀⠥⠝⠙⠑⠗⠀⠞⠓⠑⠀⠓⠁⠊⠗⠤⠇⠊⠝⠑⠲⠀ ⠠⠞⠓⠑⠝⠀⠗⠑⠁⠙⠀⠀⠞⠓⠑⠀⠗⠑⠎⠥⠇⠞⠀⠕⠝⠀⠞⠓⠑⠀⠠⠙⠀⠎⠉⠁⠇⠑⠀ ⠥⠝⠙⠑⠗⠀⠞⠓⠑⠀⠇⠑⠋⠞⠤⠓⠁⠝⠙⠀⠊⠝⠙⠑⠭⠀⠕⠋⠀⠞⠓⠑⠀⠠⠉⠀ ⠎⠉⠁⠇⠑⠲⠀⠠⠁⠎⠀⠀⠊⠝⠀⠍⠥⠇⠞⠊⠏⠇⠊⠉⠁⠞⠊⠕⠝⠂⠀⠞⠓⠑⠀ ⠙⠑⠉⠊⠍⠁⠇⠀⠏⠕⠊⠝⠞⠀⠍⠥⠎⠞⠀⠃⠑⠀⠏⠇⠁⠉⠑⠙⠀⠃⠽⠀⠁⠀ ⠎⠑⠏⠁⠗⠁⠞⠑⠀⠀⠏⠗⠕⠉⠑⠎⠎⠲⠀⠠⠍⠁⠅⠑⠀⠁⠇⠇⠀⠞⠓⠑⠀⠙⠊⠛⠊⠞⠎⠀ ⠑⠭⠉⠑⠏⠞⠀⠞⠓⠑⠀⠋⠊⠗⠎⠞⠀⠊⠝⠀⠃⠕⠞⠓⠀⠙⠊⠧⠊⠙⠑⠝⠙⠀⠁⠝⠙⠀⠀ ⠙⠊⠧⠊⠎⠕⠗⠀⠑⠟⠥⠁⠇⠀⠵⠑⠗⠕⠀⠁⠝⠙⠀⠍⠑⠝⠞⠁⠇⠇⠽⠀⠙⠊⠧⠊⠙⠑⠀ ⠞⠓⠑⠀⠗⠑⠎⠥⠇⠞⠊⠝⠛⠀⠝⠥⠍⠃⠑⠗⠎⠲⠀⠠⠏⠇⠁⠉⠑⠀⠞⠓⠑⠀⠀ ⠙⠑⠉⠊⠍⠁⠇⠀⠏⠕⠊⠝⠞⠀⠊⠝⠀⠞⠓⠑⠀⠎⠇⠊⠙⠑⠀⠗⠥⠇⠑⠀⠗⠑⠎⠥⠇⠞⠀
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.