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Menus for changing digital number size.
SCALES
The depth scale between the upper and lower limit on the right side of
the screen can be turned on or off. The default is on.
Scales menu, with scale on (left) and off (right). With the scale off, only
the upper and lower limits (zero and 60 in this case) are displayed
To turn the scale off, press MENU DOWN until CHART SETUP appears, then
press UP ARROW. Press MENU DOWN until SCALES appears, then press
DOWN ARROW to select UPPER LOWER ONLY. Press the PWR key to clear
the menus.
To turn scale on, press MENU DOWN until CHART SETUP appears, then
press UP ARROW. Press MENU DOWN until SCALES appears, then press
UP ARROW to select SHOW INTERMEDIATE. Press the PWR key to clear the
menus.