SATO GT424 Operator's Manual page 46

Section 3: Configuration and Operation
3 . 5 . 7 S e t t i n g P r o p o r t i o n a l P i t c h
This setting determines whether the space surrounding each text
character is of a fixed width, or whether that space is to be varied to
be visually more pleasant.
Use the buttons to select either PROPORTIONAL or FIXED.
The default value is FIXED.
Press ENTER to confirm your selection and return to the main User
Mode screen. Press the FUNCTION or CANCEL key to exit the User Mode setting.
Note:
The subject fonts are from x21 to x24
Page 3-10 GT Series Operator's Manual