When using the ARC system in rifle mode, once the unit is powered, depressing the power button
for approximately two seconds—while maintaining the aiming circle on-target—then letting off,
the display will show the line-of-sight distance, and immediately right of
it is the unit of measurement. Below those, the degree of angle will be shown for approximately
one and a half seconds before the unit reveals the bullet drop/holdover—the most important number.
The latter two measurements will toggle back and forth for five seconds before the unit shuts off.