The Star-Tron 303 A appeared in the 1960s, and if it is now supplanted by digital goggles, it is renowned for its exceptional optical. First model of a long series, the Mark 303-A is no longer manufactured today. This one with serial number MK 303 - A BN W 0408, is in perfect condition. it works with two batteries of 1,5 v. ref. LR50 easy to find in battery stores. It is equipped with a fixation rail for long weapon (sniper rifle or lookout M60) adjustable in azimuth and height, fixation with hook and screw. It is equipped with its day cap (dark green lens) and the opaque lens cap: these objects cannot bear the daylight without filter. Weight: 2.5 kg Length: 34 cm without rail maximum diameter: 10 cm (at the lens) Reticule displayed in the lens (unfortunately impossible to photograph ); sharpness adjustment ring Some dust in the lens (do not try to disassemble), without discomfort for the vision. Features of the model: magnification (adjustable 3 positions) Max 4 x field: 10,7° range: 20' (45 cm) to infinity settings: + 4 to-4 tube: type 1st generation 18mm with 3 positions, automatic brightness control resolution: 28-32 lp/mm Gain: 40 000 - 60 000 reticule : "T" OTAN Power supply: 3V DC lithium batteries Shipping in secure package, although fragile object of military quality .