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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. British standard ordnance weights and measurements - Wikipedia

    en.wikipedia.org/wiki/British_standard_ordnance...

    Ordnance QF 3-pounder Vickers: Naval gun 47 mm 1.85 inch Ordnance QF 6-pounder: Anti-tank gun 57 mm 2.244 inch Ordnance BL 10-pounder Mountain gun: Mountain gun 69.8 mm 2.75 inch 12-pounder (multiple types) Light field gun 76.2 mm 3 inch Ordnance QF 13-pounder: Light field gun 76.2 mm 3 inch 15- pounder (multiple types) Field gun 76.2 mm 3 inch

  4. 120 film - Wikipedia

    en.wikipedia.org/wiki/120_film

    Frame number markings for three standard image formats (6×4.5, 6×6, and 6×9 [4:3, 1:1, and 2:3 aspect ratios]; see below) are printed on the backing paper. The 220 format was introduced in 1965 and is the same width as 120 film, but with about double the length of film and thus twice the number of possible exposures per roll.

  5. List of rifle cartridges - Wikipedia

    en.wikipedia.org/wiki/List_of_rifle_cartridges

    Printable version; In other projects Wikidata item ... 2.17 Hornady Magnum Rimfire, 3.22 Long Rifle, 4.22 Winchester Magnum Rimfire, 5.17/ ... 5.6×61mm VHSE; 5.7× ...

  6. 7.62 mm caliber - Wikipedia

    en.wikipedia.org/wiki/7.62_mm_caliber

    Many pistol cartridges are in this caliber; the most common are: 7.62×25mm Tokarev, also known as 7.62 mm TT, is used in the Tokarev pistol, and many of the World War II Soviet submachine guns; 7.63×25mm Mauser, which was the basis for, and has nearly identical dimensions to, the Tokarev, but has different loading specifications.

  7. List of infantry mortars - Wikipedia

    en.wikipedia.org/wiki/List_of_infantry_mortars

    3.2 [3] 50 Lance Grenades de 50 mm modèle 37 France: World War II: 3.6 50 5 cm lGrW 36 Nazi Germany: World War II: 14 50 Type 10 grenade discharger Japan: World War II: 2.3 50 Type 89 Grenade Discharger Japan: World War II: 4.7 50 Type 98 50 mm Mortar Japan: World War II: 22.5 50 LGI Mle F1 France: Modern: 4.8 50 50-PM-38 Soviet Union: World ...

  8. 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 ...

  9. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    T scale, using 3 mm gauge track to represent standard gauge railways. 1:450: 0.677 mm: Model railways (T) T scale, using 3 mm gauge track to represent 3 ft 6 in (1,067 mm) gauge railways. Hasegawa also produces plastic ship models in this scale. 1:432: 0.706 mm