Flip down quick re-focus Lens
model 2778-0301

IMMEDIATE RE-FOCUS TO 45 - 60 cm

PERMITS 
- READING / WRITING.
- RADIO OPERATION.
- VIEWING VEHICLE. INSTRUMENTS.
- EMERGENCY MEDICAL OPS.
- FOCUS ON WEAPON SIGHTS.

- WITH NO RE-FOCUSING OF OBJECTIVE LENS

(Shown attached to the AN / PVS21 LP-NVG)