NcSTAR STM3942GV2 - Manual (Page 6)

increments of 100 yards. So whatever distance you are shooting at, simply turn the BDC knob
to the closest BDC range in 100 yards increments.
NOTE: Since altitude, temperature, wind, rain, and other climatic conditions affect trajectory, you
may experience some slight deviation in the exact settings of your scope from one shooting
session to the next. Also, different cartridge batches, brands, loads, and bullet weights will result
in different points of impact.
ILLUMINATED RETICLE
Your Mark III Tactical Scope is equipped with an Illuminated Reticle that can be turned On and
Off by simply rotating the Rheostat knob located on the left side of the turret housing (Fig. 6)
Figure 6
The reticle can be illuminated in two different colors Blue or
Green with multiple brightness levels for each. If you look
closely at the top of the knob you will notice a series of
numbers. “0” represents the OFF position. If you turn the knob
in either direction the reticle will illuminate in Blue or Green
(depending upon the direction that it is turned). Both colors
have three brightness levels each, “1” being the dimmest and
“3” being the brightest. Adjust the brightness level as needed in
accordance with the surrounding conditions. The illumination
will increase reticle visibility especially during dusk and dawn.
When the illumination is turned OFF the reticle will appear as
normal (Black Reticle). Be sure the Rheostat Knob is set to the
“0” position when not in use to preserve battery life.
BATTERY INSTALLATION
Your Mark III Tactical Scope comes ready to use with a pre-installed battery. If the battery life
expires or your scope no longer illuminates, follow these simple instructions:
Figure 7
1. The Battery compartment is located within the Rheostat
Knob (Fig. 7)
2. On the top of the Rheostat Knob you will notice a thin
cap. To remove this cap grasp it firmly with one hand and
twist it counter-clockwise while holding the rheostat knob
firmly in place with the other hand.
3.
Remove the old battery and dispose of it properly.
Replace it with a new 3 volt Lithium Battery type CR2032
only. Place the Battery in the Battery compartment with the
Positive “+” terminal facing out. Twist the Battery cap back
on to the Rheostat Knob and hand tighten. Avoid using tools
(such as pliers) to perform this procedure as this may cause
damage to the unit.