The eye cups are made of soft rubber and fold in so that the binocular can be used with a gas-mask. To comply with strict military specifications the EDFs had to go through very tough test procedures. Among others, they were exposed to 5 cycles of temperature changes from -50 deg.
At 2 hours per cycle, they were sprayed with 27 deg. Sea water for 168 hours, were dropped from 75 cm, were exposed to accelerations of 15g at 5-10 ms duration and accelerations of 120g at 1-5 ms duration, kept in 1 meter deep cold water for an hour etc.
There is no doubt that the EDF has got a bomb-proof design which is not found in any civilian binocular. The EDF utilizes very low dispersion glass with improved multi-coating for superior sharpness and contrast even under low light conditions - possibly supported by the yellow tint, which helps to filter the bluish glow of haze.
It features a lever right to the right hand side ocular to switch on/off the reticle illumination, and the symbol for radioactivity. The light source is a small hollow and transparent capsule, filled with radioactive tritium gas and inner walls coated with a tin sulfide layer. The tritium is decaying, emitting electrons which then excite the tin sulfide to emit photons, which finally illuminate the reticle. The EDF was constructed so that the illumination could be removed or installed during maintenance work, i. When the NVA was absorbed into the West German Bundeswehr, the stock of binoculars was taken over, but the illumination was removed since the tritium source did not adhere to the strict West German environmental protection laws.
This binocular is therefore much less frequently found on the after market. Specifications Carl Zeiss EDF 7x40. Field of Vision on 1000 m. Privatverkauf unter Ausschluß jeglicher Gewährleistung - alle Angaben nach besten Wissen und Gewissen - keine Rücknahme oder Garantie!
The item "Carl Zeiss EDF 7x40 B/GA" is in sale since Sunday, January 27, 2019. This item is in the category "Foto & Camcorder\Teleskope & Ferngläser\Ferngläser". The seller is "neverexposed" and is located in Aalen.
This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.