Newcon Optik NVS 22-2XT - Manual (Page 9)

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6. INSTALLATION ON A RIFLE
1) Loosen slightly the Clamp screw 11 (Fig. 1) of the adapter rail.
2) Place the NVS-22-2XT onto the Picatinny rail of the fire arm before
objective of daytime scope at the minimal distance from it.
3) Tighten the fixing Clamp screws 11 (Fig. 1)
NOTE:
- Clamp screws may need to be tightened again after continuous
shooting.
- Open the lens cap of the daytime scope prior to installation of
NVS 22-2XT. With NVS 22-2XT mounted in front of the scope it may
be impossible to take the scope lens cap off.
When mounted in front of the daytime riflescope, depending on the
daytime riflescope and position of night vision attachment to the day
time riflescope the complete system may change zeroing (bore sighting)
no more than 1MOA at 100 m.
This is related to changes in the weapon balance, light distortions in the
image intensifier tube, technological limits in the adjustment of the
riflescope attachment. This imprecision usually appears as fixed value
and can be easily compensated by the adjustment mechanism of the