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  2. 7/16 DIN connector - Wikipedia

    en.wikipedia.org/wiki/7/16_DIN_connector

    The inner contact on the 7-16 DIN connector measures 7 mm in outer diameter while the outer contact on the connector measures 16 mm. in inner diameter [3] DIN is an acronym for the Deutsches Institut für Normung, the standards organization that harmonized the standard for the connector. (Previously the 7-16 had been developed as a military ...

  3. List of drill and tap sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

    Example (inch, coarse): For size 7 ⁄ 16 (this is the diameter of the intended screw in fraction form)-14 (this is the number of threads per inch; 14 is considered coarse), 0.437 in × 0.85 = 0.371 in. Therefore, a size 7 ⁄ 16 screw (7 ⁄ 16 ≈ 0.437) with 14 threads per inch (coarse) needs a tap drill with a diameter of about 0.371 inches.

  4. 16-inch/50-caliber Mark 7 gun - Wikipedia

    en.wikipedia.org/wiki/16-inch/50-caliber_Mark_7_gun

    The lightweight 16-in/50 Mark 7 was designed to resolve this conflict. These guns were 50 calibers long, 50 times their 16-inch (406 mm) bore diameter with barrels 66.7 ft (20.3 m) long, from chamber to muzzle. Each gun weighed about 239,000 lb (108 t) without the breech, and 267,900 lb (121.5 t) with the breech. [1]

  5. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    Thus, the outer diameter of a catheter in millimeters can be calculated by dividing the French size by 3. [2] For example, a catheter with a French size of 9 would have an outer diameter of approximately 3 mm. While the French scale aligns closely with the metric system, it introduces redundancy and the potential for rounding errors.

  6. Gauge (firearms) - Wikipedia

    en.wikipedia.org/wiki/Gauge_(firearms)

    A 12-gauge shotgun, nominally 18.5 mm (0.73 in), can range from a tight 18 mm (0.71 in) to an extreme overbore of 20 mm (0.79 in). Some also claim an increased velocity with the overbored barrels, up to 15 m/s (49 ft/s), which is due to the larger swept volume of the overbored barrel.

  7. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    54 mm figure scale toy soldiers are supposed to use this scale as well. Same as Gauge 1, cars, common for slot cars. Commonly referred to as Stablemate size in model horses. 1:30.5: 10 mm Often quoted as the alternative to 1:32 scale. 1:30: 0.4 in: 10.16 mm Toy soldiers and military vehicles including King & Country and Figarti. 1:29: 10.51 mm

  8. Drill bit sizes - Wikipedia

    en.wikipedia.org/wiki/Drill_bit_sizes

    So a 1 / 2 in (12.7 mm) diameter drill will be able to drill a hole 4 + 1 / 2 in (114.3 mm) deep, since it is 9 times the diameter in length. A 1 / 8 in (3.175 mm) diameter drill can drill a hole 1 + 5 / 8 in (41.275 mm) deep, since it is 13 times the diameter in flute length.

  9. List of track gauges - Wikipedia

    en.wikipedia.org/wiki/List_of_track_gauges

    900 mm: 2 ft 11 + 7 ⁄ 16 in: See 900 mm gauge railways: 914 mm: 3 ft: See 3 ft gauge railways 3 ft gauge railways in the United Kingdom: 925 mm: 3 ft 13 ⁄ 32 in: Germany Trams in Chemnitz, since in 1914 943 mm: 3 ft 1 + 1 ⁄ 8 in: England Central Electricity Generating Board Fawley Tunnel [75] 946 mm: 3 ft 1 + 1 ⁄ 4 in: Austria