Tally Genicom Matrix Printer - Manual (Page 223)

Proportional width during scaleable font mode
The values of the character widths are depending on the selected point size
at your printer.
The width of the scaleable fonts are based on the width of a proportional
10.5 point character.
Calculate the width as follows:
(character width) =
INT  

(point size) x (base width)
10.5
+ 0.5

360
inch
Example for a 24 point "0" *)
(character width) =
INT  

(24) x (30)
10.5
+ 0.5

360
inch
(character width) =
INT (69.07)
360
inch
(character width) =
69
360
inch
* The base width for the large character "0" is 30. Please refer to the table .
B-12 Character Sets