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  2. Circular mil - Wikipedia

    en.wikipedia.org/wiki/Circular_mil

    For example, one common wire size used in the NEC has a conductor diameter of 0.5 inches, or 500 mils, and thus a cross-section of = circular mils, written as 250 kcmil or 250 MCM, which is the first size larger than 0000 AWG used within the NEC.

  3. .600 Overkill - Wikipedia

    en.wikipedia.org/wiki/.600_Overkill

    The .600 Overkill was designed by Robert Garnick of Las Vegas, Nevada in 2000. The case is a custom, with a belt, .683 in (17.35 mm), added for headspacing and the rim to fit that of the .505 Gibbs.640 in-(16.26 mm) size, bolt face.

  4. Caliber - Wikipedia

    en.wikipedia.org/wiki/Caliber

    medium-bore refers to calibers with a diameter of 0.33 inches (8.4 mm) to 0.39 inches (9.9 mm) large-bore refers to calibers with a diameter of 0.40 inches (10 mm) or larger There is much variance in the use of the term "small-bore", which over the years has changed considerably, with anything under 0.577 inches (14.7 mm) considered "small-bore ...

  5. Milliradian - Wikipedia

    en.wikipedia.org/wiki/Milliradian

    If using the metric unit meters for distance and the imperial unit inches for target size, one has to multiply by a factor of 25.4, since one inch is defined as 25.4 millimeters. distance in meters = target in inches angle in mrad × 25.4 {\displaystyle {\text{distance in meters}}={\frac {\text{target in inches}}{\text{angle in mrad}}}\times 25.4}

  6. M134 Minigun - Wikipedia

    en.wikipedia.org/wiki/M134_Minigun

    The M134 Minigun is an American 7.62×51mm NATO six-barrel rotary machine gun with a high rate of fire (2,000 to 6,000 rounds per minute). [2] It features a Gatling-style rotating barrel assembly with an external power source, normally an electric motor.

  7. 2 ft and 600 mm gauge railways - Wikipedia

    en.wikipedia.org/wiki/2_ft_and_600_mm_gauge_railways

    Two foot and 600 mm gauge railways are narrow gauge railways with track gauges of 2 ft (610 mm) and 600 mm (1 ft 11 + 5 ⁄ 8 in), respectively. Railways with similar, less common track gauges, such as 1 ft 11 + 3 ⁄ 4 in ( 603 mm ) and 1 ft 11 + 1 ⁄ 2 in ( 597 mm ), are grouped with 2 ft and 600 mm gauge railways.

  8. GMC straight-6 engine - Wikipedia

    en.wikipedia.org/wiki/GMC_Straight-6_engine

    The 477-cubic-inch (7.8 L) 477 was released late in the 1940 model year, replacing the 451. It was the largest in the GMC straight-6 line until it was replaced by the 503 in 1950. It shares the same 5 inches (130 mm) stroke as the 426 and 451, with a 4 + 1 ⁄ 2 inches (110 mm) bore. It produced a maximum 154 hp @ 2600 rpm and 385 lb•ft ...

  9. RIM-174 Standard ERAM - Wikipedia

    en.wikipedia.org/wiki/RIM-174_Standard_ERAM

    The RIM-174 Standard Extended Range Active Missile (ERAM), or Standard Missile 6 (SM-6), is a missile in current production for the United States Navy (USN). It was designed for extended-range anti-air warfare (ER-AAW) purposes, providing capability against fixed and rotary-wing aircraft, unmanned aerial vehicles, anti-ship cruise missiles in flight, both over sea and land, and terminal ...