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Braille Cell Dimensions


The standard Braille cell consists of six dots in two columns of three dots.

Picture of the standard braille cell

 
Horiz
dot
to dot
mm
Vertical
dot
to dot
mm
Cell
to
cell
mm
Line
to
line
mm
Dot
base
diam
mm
Dot
height

mm
 
a
b
c
d
 
 
 Californian Sign
2.2
2.2
7.62
10.16
1.5
0.53
 Electronic Braille
2.4
2.4
6.4
--
 
0.8
 English Interline
2.29
2.54
6.00
12.70
1.4 - 1.5
0.46
 English Interpoint
2.29
2.54
6.00
10.41
1.4 - 1.5
0.46
 English Giant Dot
3.25
3.25
9.78
17.02
1.9
0.81
 Enlarged American
2.54
2.54
7.24
12.70
 
 
 Enhanced Line Spacing
2.29
2.29
6.1
15.24
 
 
 French
2.5 - 2.6
2.5 - 2.6
 
>10
1.2
0.8 - 1.0
 International Building Standard
2.5
2.5
6.1 - 7.6
10.0 - 10.1
1.5 - 1.6
0.6 - 0.9
 Italian
2.2 - 2.5
2.2 - 2.5
5.7
 
 
0.5
 Japanese
2.03
2.03
5.08
8.63
 
 
 Japanese
2.13
2.37
5.4
13.91
   
 Japanese Interline
2.03
2.03
5.08
12.7
 
 
 Jumbo American
2.92
2.92
8.76
12.70
1.7
0.53
 Korean
2.17
2.3
5.34
10.43
   
 Latvia
2.5
2.5
5
10.0
1.6
0.45
 Marburg Medium
2.50
2.50
6.00
10.00
 
 
 Marburg Large
2.70
2.70
6.60
10.80
 
 
 Portuguese
2.29
2.54
6.0
10.41
1.4
 
 Small English
2.03
2.03
5.38
8.46
1.4 - 1.5
0.33
 Spanish
2.5
2.5
6.0
10.0
1.2
 
 Standard American
2.34
2.34
6.22
10.16
1.45
0.48
 Swedish
2.5
2.5
6.0
10
1
0.25

 

 

 

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Last updated: 12.03.2008   © Copyright reserved