Leupold GX-3c Operating Instructions Manual page 24

8) The 4-iron indicator will be shown in the upper display, and
either the last save distance or 6-iron distance plus 20 yards
will be shown in the lower display . If you wish to input a
distance other than the one shown, proceed to step 9 . To save
the shown distance for your 4-iron, let the unit sit idle for
at least 30 seconds until an automatic power-down occurs,
or simply press and hold MODE for at least 2 seconds . To
continue through the Quick Set Menu and manipulate another
function, press and release MODE until the appropriate icon is
displayed .
9) Press POWER to set the distance obtained
with your 4-iron shot in 5-yard/meter
increments, until 240 yards (220 meters)
has been reached . Once 240 yards (220
meters) has been reached, it will reset to
the 6-iron distance plus 5 yards/meters
and start over again . When the appropriate
distance is displayed, let the unit sit idle for
at least 30 seconds until an automatic power-down occurs,
or simply press and hold MODE for at least 2 seconds . To
continue through the Quick Set Menu and manipulate another
function, press and release MODE until the appropriate icon is
displayed .
21