TallyGenicom Matrix Printer Programmer's 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:
Example for a 24 point "0" *)
* The base width for the large character "0" is 30. Please refer to the table
B-12
Character Sets
INT
(character width) =
INT
(character width) =
INT (69.07)
(character width) =
69
(character width) =
360
 (point size) x (base width)

10.5

360
 (24) x (30) 
+ 0.5
 
10.5
 
inch
360
inch
360
inch

+ 0.5


inch
.