Example: Blocks of One Hundred

The following points indicate the braille code, format rules, and design techniques that were used for this tactile graphic example.

Nemeth braille code
spatial format for operation sign (minus) between blocks, one blank braille cell on either side (6.8.2.1)
placement of dots 14 of operation sign even with top of block. Using a full braille cell as a reference, dots 36 of the minus sign is lower than the block. (6.8.2.1)
spatial format for comparison sign (equals) after blocks, one blank braille cell between block and equals sign (6.8.2.1)
placement of dots 13 of comparison (equals)even with top of block (6.8.2.1)
size of squares minimal to allow blocks and signs to fit side-by-side (6.8.2.1)
use of shading technique (single dot larger than one braille dot) for blocks (6.8.3.2)

Image: Blocks of one hundred

Image: Blocks of 100 simbraille tactile graphic