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The scope body is sealed and filled with nitrogen, which prevents fogging of optics and was designed to function within a -50 °C to 50 °C temperature range. For zeroing the telescopic sight the reticle can be adjusted by manipulating the elevation and windage turrets in 5 centimetres (2.0 in) at 100 metres (109 yd) (0.5 mil or 1.72 MOA ...
A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. [ 1] It is equipped with some form of a referencing pattern – known as a reticle – mounted in a focally appropriate position in its optical system to provide an accurate point of aim.
The Advanced Combat Optical Gunsight ( ACOG) is a series of prismatic telescopic sights manufactured by Trijicon. The ACOG was originally designed to be used on the M16 rifle and M4 carbine, but Trijicon has also developed ACOG accessories for other firearms. Models provide fixed-power magnification levels from 1.25× to 6×. [ 1]
Unertl Optical Company. 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.
The PSL rifle is typically issued with a 4×24 optical sight called LPS 4×6° TIP2 ( Lunetă Puṣcă Semiautomată Tip 2, or "Scope, Semi-Automatic Rifle, Type #2") which is a simplified version of the Russian PSO-1 telescopic weapon sight. This optical sight features 4× magnification, a 6° field of view, and the objective lens is 24 mm in ...
Optics. Mirrors and lenses are the critical light-bending components of a telescope. Objective: The first lens or curved mirror that collects and focuses the incoming light. Primary lens: The objective of a refracting telescope. Primary mirror: The objective of a reflecting telescope. Corrector plate: A full aperture negative lens placed before ...
Optical microscope. The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century.
Oscillating turret. AMX-13. An oscillating turret is a form of turret for armoured fighting vehicles, both tanks and armoured cars. The turret is unusual in being made of two hinged parts. Elevation of the gun relies on the upper part of the turret moving relative to the lower part. Oscillating turrets have rarely been used.