Yes, all digits are 3 character wide. But the stroke width is different at some parts isn't it? Like The vertical strokes in the digit '0' is 5 pixel wide and horizontal stroke is just 3. Also you'll have to leave a column between two digits. If you don't, then it becomes very cluttered, right? So I intended to make the digits with stroke width of 3 pixel, which would leave enough space, even without leaving a column after a digit and i guess it makes the digits look more symmetric.