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  2. Caliber - Wikipedia

    en.wikipedia.org/wiki/Caliber

    The .308 Winchester is measured across the grooves and uses a .308-in diameter (7.82-mm) bullet; the military-specification version is known as 7.62 × 51 mm NATO, so called because the bore diameter measured between the lands is 7.62 mm, and the cartridge has a case 51 mm long.

  3. 13 mm caliber - Wikipedia

    en.wikipedia.org/wiki/13_mm_caliber

    13 mm caliber. This is a list of firearm cartridges which have bullets that are 13 millimetres (0.51 in) caliber or larger. Length refers to the cartridge case length. OAL refers to the overall length of the cartridge. Bullet refers to the diameter of the bullet. All measurements are in mm (in).

  4. QF 4.5-inch howitzer - Wikipedia

    en.wikipedia.org/wiki/QF_4.5-inch_howitzer

    QF 4.5-inch howitzer. 114 x73-86 mm R separate QF. HE shell 16 kg (35 lb) The Ordnance QF 4.5-inch howitzer was the standard British Empire field (or "light") howitzer of the First World War era. It replaced the BL 5-inch howitzer and equipped some 25% of the field artillery. It entered service in 1910 and remained in service through the ...

  5. Miniature model (gaming) - Wikipedia

    en.wikipedia.org/wiki/Miniature_model_(gaming)

    Figures of 15 mm, 20 mm, 25 mm, 28 mm, 30 mm, 32 mm, and 35 mm are the most common for role-playing and table-top games. Smaller figures of 2 mm, 6 mm, 10 mm, 15 mm, and 20 mm are used for mass-combat wargames. Large sizes such as 40 mm and 54 mm were popular with wargamers in the past and are still used by painters and collectors.

  6. Chinese units of measurement - Wikipedia

    en.wikipedia.org/wiki/Chinese_units_of_measurement

    Table of Chinese length units effective in 1930 [3] Pinyin Character Relative value Metric value Imperial value Notes háo : 毫: 1 ⁄ 10 000: 33 + 1 ⁄ 3 μm 0.001 31 in: Chinese mil lí: 釐 (T) or 厘 (S) 1 ⁄ 1000: 1 ⁄ 3 mm 0.0131 in Chinese calibre fēn: 市分: 1 ⁄ 100: 3 + 1 ⁄ 3 mm 0.1312 in Chinese line cùn: 市寸: 1 ⁄ 10: ...

  7. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 10 −3 metres (⁠ 1 / 1 000 ⁠ m = 0.001 m). To help compare different orders of magnitude, this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm). 1.0 mm – 1/1,000 of a metre; 1.0 mm – 0.03937 inches or 5/127 (exactly)