Font

Here is the list that I compile myself

Tipe font: Tahoma

Width:

Alfabet:
A = 7 pixels
a = 6 pixels
B = 7 pixels

b = 6 pixels

Reading sign (punctuation):

" " = 3 pixels

, = 3 pixels

. =  3 pixels

- = 3 pixels

-- = 6 pixels
? = 6 pixels
! = 3 pixels

Numba:
1 = 6 pixels
2 = 6 pixels
21 = 12 pixels
Conclusion:
The width are vary. Dataset: {3, 6, 7}.

For depth about punctuation: http://perjuangan9.blogspot.co.id/2015/11/punctuation.html