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  2. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    The United States retained the ⁠ 1 / 39.37 ⁠-metre definition for surveying, producing a 2 millionth part difference between standard and US survey inches. [47] This is approximately ⁠ 1 / 8 ⁠ inch per mile; 12.7 kilometres is exactly 500,000 standard inches and exactly 499,999 survey inches.

  3. 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 ...

  4. 7.62×51mm NATO - Wikipedia

    en.wikipedia.org/wiki/7.62×51mm_NATO

    [5] [6] Many other firearms that use the 7.62×51mm NATO fully powered cartridge remain in service today, especially various designated marksman rifles/sniper rifles and medium machine guns/general-purpose machine guns (e.g. M24 Sniper Rifle and M240 Medium Machine Gun). The cartridge is also used on mounted and crew-served weapons that are ...

  5. 7×61mm Sharpe & Hart - Wikipedia

    en.wikipedia.org/wiki/7×61mm_Sharpe_&_Hart

    The 7×61mm Sharpe & Hart Magnum belted cartridge (A.K.A. 7mm S&H Super [1]) was developed by Philip B. Sharpe and Richard (Dick) Hart in the 1950s. Some articles claim it was based on the .300 H&H Magnum case, [ 1 ] [ 2 ] while others claim it was based on the 7x61 MAS M1907 case.

  6. 7.62 mm caliber - Wikipedia

    en.wikipedia.org/wiki/7.62_mm_caliber

    7.7×58mm Arisaka is used in the Type 99, Type 2 and Type 4 rifles. 7.65×53mm Argentine is used in various Mauser bolt-action rifles, primarily in Belgium, Turkey, and Argentina..308 Norma Magnum.300 Norma Magnum.300 Winchester Magnum is used by many hunting and sniper rifles, sometimes called the 7.62×67mm..300 Winchester Short Magnum

  7. Gear inches - Wikipedia

    en.wikipedia.org/wiki/Gear_inches

    Hence the wheel diameter is (2 × 23 mm) + 622 mm = 668 mm which is equal to 26.3 inches (rounded to 1 decimal place). 26 inch mountain bicycle wheels have a rim diameter of 559 mm. This ignores factors that contribute to the actual rolling radius of the tyre and rim together: the vertical deflection of the tire above the contact patch and the ...

  8. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales.The microwave is between 1 meter to 1 millimeter.. The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length.

  9. 9.3×62mm - Wikipedia

    en.wikipedia.org/wiki/9.3×62mm

    Though it is of smaller bore than the legal minimum .375 calibre for dangerous game in most countries, many countries specifically make an exception for the 9.3×62mm. [ 5 ] [ 6 ] [ 7 ] The 9.3×62mm is considered adequate for European and North American game animals that may become dangerous, such as feral hogs and bears .