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The Low Level Bombsight, Mark III, sometimes known as the Angular Velocity Sight, was a Royal Air Force (RAF) bombsight designed for attacks by aircraft flying below 1,000 feet (300 m) altitude. It combined components of the Mark XIV bomb sight with a new mechanical computer .
Norden proposed removing the electrical switches used to move the pointer and using the entire bombsight itself as the indicator. In place of the thin metal wires that formed the sights on the Mark III, a small low-power telescope would be used in its place. The bombardier would rotate the telescope left or right to follow the target.
The Ross rifle is a straight-pull bolt action rifle chambered in .303 British that was produced in Canada from 1903 until 1918. [1]The Ross Mk.II (or "model 1905") rifle was highly successful in target shooting before World War I, but the close chamber tolerances, lack of primary extraction and length made the Mk.III (or "1910") Ross rifle unsuitable for the conditions of trench warfare ...
Mark III free gun reflector sight mk 9 variant. Another type of optical sight is the reflector (or "reflex") sight, a generally non-magnifying optical device that allows the user to look through a glass element and see a reflection of an illuminated aiming point or some other image superimposed on the field of view. [7]
A view through the Mark III Free Gun Reflector Sight, first produced in 1943, used on British army guns, naval guns, and as a pilot sight and a defensive gun sight on aircraft. The reticle image in this sight is produced by an optical collimator bounced off a beam splitter.
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The Mark VII loading used a 174 gr (11.28 g) pointed bullet with a flat-base. The .303 British Mark VII cartridge was loaded with 37 gr (2.40 g) of Cordite MDT 5-2 (cordite MD pressed into tubes) and had a muzzle velocity of 2,440 ft/s (744 m/s) and a maximum range of approximately 3,000 yd (2,700 m).
The Martini–Enfield Mk I was a Martini–Henry Mk III rebarrelled to .303 and with a new extractor installed, whilst the Martini–Enfield Mk II rifles were generally of new manufacture, although there are examples of converted Mk II rifles.