Library / Engineering & Technology / Instruction for Using a Slide Rule / Braille
Instruction for Using a Slide Rule ⠃⠗⠋ braille edition
Grade 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.
Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt
25,004 braille cells · 26 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.