3 Aviator 1x25 Dual Tube Night Vision Goggles System. NVS 6-3XT ANVIS goggle enables pilots to operate their aircraft in the darkest flight environments. This goggle allows aviators to navigate at the nap of the earth, take off, land and perform other operations that are otherwise impossible at night without the use of a light source. Adjustable 25 mm eyepieces provide improved eye relief enabling excellent viewing regardless of the eyepiece positioning. Ergonomically designed interface controls, including interpupillary adjustments and vertical, fore-aft and tilt adjustments, ...