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Unertl Optical Company, Inc. was a manufacturer of telescopic sights in the United States from 1928 until 2008. They are known for their 10× fixed-power scopes that were used on the Marine Corps' M40 rifle and made famous by Marine Corps Scout Sniper Carlos Hathcock during the Vietnam War.
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
In astronomy, a photometric system is a set of well-defined passbands (or optical filters), with a known sensitivity to incident radiation.The sensitivity usually depends on the optical system, detectors and filters used.
The company announced in 2011 that they were reentering the kit business after a 20-year hiatus but then filed for bankruptcy in 2012, [2] and under new ownership began restructuring in 2013. As of 2022 [update] , the company has a live website with newly designed products, services, vintage kits, and replacement parts for sale. [ 3 ]
The Blohm & Voss BV 155 is a German high-altitude interceptor aircraft intended to be used by the Luftwaffe against raids by USAAF Boeing B-29 Superfortresses.Work started on the design as the Messerschmitt Me 155 in 1942, but the project went through a protracted development period and change of ownership, and prototypes were still under test and development when World War II ended.
The Blohm & Voss BV 40 was a prototype armoured German glider initially designed in mid-1943 by Blohm & Voss to attack Allied bomber formations during World War II.The BV 40 would be towed to high altitude by single-engined fighters and then ram the bombers while in a dive, but this concept was rejected before its first flight in May 1944 in favour of using its guns.