Top axle 7x50 binoculars compass blue

The Bresser Topas Compass 7x50 Porrism Prisma Viewer is a high -quality waterproof binoculars that is specially designed for the Nautical/Watersport Market. With an enlargement of 7x this is ideal for searching for buoys, other ships and bridges, even during stormy weather. With a lens diameter of 50 mm, the viewer is very clear and can also be used at night in clear sky. The viewer has an exit pupil of 7.15 mm, which is the same size as the human eye, so that the entire light intensity is used and there is no loss of light. The viewer has completely dioptrically adjustable le (long eye) oculars with eye shells, so that it can be adapted to your personal eyesight. The eye shells can easily be folded back, so that spectacle wearers can also see the entire field of vision. Focusing is done via both oculars and once focused at a distance of approximately 20 meters, the viewer stays sharp to infinity without having to set up again. The viewer is equipped with an enlightened 360 ° compass that can be used for navigation, control of other shipping and the early discovery of any collision course. With the help of the rotating distance ring on the right objective tube, the distance can be estimated and the height can be calculated to determine whether you can sail under a bridge. The viewer is filled with nitrogen, which makes it waterproof and does not cover from the inside. There is a thread at the front of the viewer, so that it can easily be mounted on any camera -stuck using a tripod adapter. A yellow belt is supplied, so that the viewer floats if it accidentally falls into the water. Specifications: - Color: Blue - Gender: unisex - Material: plastic, rubber - Dimensions: 19.5 x 19.7 x 8 cm - Weight: 1185 grams of optical specifications: - magnification: 7x - Lens diameter: 50 mm - Visual: 116 M - light intensity: 51.02 - Twilight: 18.71 - Optical Design: Porrism - Prisms: Bak-4