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// CODE SNIPPET

703.3.1 Dimensions and Capitalization

2010 ADA Standards > 7 Communication Elements and Features > 703 Signs > 703.3 Braille > 703.3.1 Dimensions and Capitalization
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Braille dots shall have a domed or rounded shape and shall comply with Table 703.3.1.  The indication of an uppercase letter or letters shall only be used before the first word of sentences, proper nouns and names, individual letters of the alphabet, initials, and acronyms.
Table 703.3.1 Braille Dimensions
Measurement RangeMinimum in Inches
Maximum in Inches
1. Measured center to center.
Dot base diameter 0.059 (1.5 mm) to
0.063 (1.6 mm)
Distance between
two dots in the same cell 1
0.090 (2.3 mm) to
0.100 (2.5 mm)
Distance between
corresponding dots
in adjacent cells 1
0.241 (6.1 mm) to
0.300 (7.6 mm)
Dot height 0.025 (0.6 mm) to
0.037 (0.9 mm)
Distance between
corresponding dots
from one cell directly below 1
0.395 (10 mm) to
0.400 (10.2 mm)
Figure 703.3.1 Braille Measurement
Six Braille cells are shown indicating what is meant by

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