Newcon Optik NSN: 5855-20-000-8284 NVS 7 - Manual (Page 18)

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starting point can be adjusted by screws (3, Fig. 7). If you loosen
them, you can rotate the flip-flop mechanism to find the suitable
starting point. Tighten the screws (3, Fig. 7) after the adjustment.
You can raise the unit for unobstructed view without taking the
helmet off. To do so press (and hold) the button (2, Fig. 7) and
rotate the unit until you hear a click.
All other operations with the unit mounted on a helmet are
identical to those with the headgear.