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Optical lenses were also required for aerial cameras, periscopes and telescopic rifle sights. [3] Pre-war Germany had been a major supplier of optical equipment to the world, with production centred on the city of Jena. [1] Carl Zeiss AG was a particularly prominent company in this field. [4]
A reflector sight or reflex sight is an optical sight that allows the user to look through a partially reflecting glass element and see an illuminated projection of ...
The rifle was designed with an iron sight line consisting of rear receiver aperture battle sight calibrated for .303 British Mk VII ball ammunition at 300 yd (274 m) with an additional ladder aperture sight that could be flipped up and was calibrated for 200–1,000 yd (183–914 m) in 100 yd (91 m) increments and 1,000–1,650 yd (914–1,509 ...
The aiming periscope also functioned as a 4-power telescopic sight. [26] However, only around 12 were constructed. [25] The Cameron-Yaggi and Elder designs could be fitted with an enlarged magazine with 25 rounds, [27] [26] [15] so as many shots as possible could be fired without needing to dismount the rifle below the trench parapet for ...
The M1917 Enfield, the "American Enfield", formally named "United States Rifle, cal .30, Model of 1917" is an American modification and production of the .303-inch (7.7 mm) Pattern 1914 Enfield (P14) rifle (listed in British Service as Rifle No. 3), which was developed and manufactured during the period 1917–1918.
The pre-set number was selected via a large dial on the front of the sight, and the range was then measured by turning another dial on the aircraft's throttle. [5] This new sight became the Mark II Gyro Sight, which was first tested in late 1943 with production examples becoming available later in the same year.
Aerial reconnaissance using heavier-than-air machines was an entirely new science that had to be improvised step-by-step. Early operations were low-level flights with the pilot often dismounting from the plane to report verbally to the nearest officers.
Reflector sights were first used as a weapon sight in German aircraft towards the end of World War I. Over the years they became more sophisticated, adding lead computing gyroscopes and electronics (the World War II Gyro gunsight ) [ 8 ] radar range finding and other flight information in the 1950s and 1960s, eventually becoming the modern head ...