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.
Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt
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.