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  2. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    The French scale measures and is proportional to the outer diameter of a catheter, with 1 French (Fr) defined as 1 ⁄ 3 millimeter, making the relationship: 1 mm = 3 Fr. Thus, the outer diameter of a catheter in millimeters can be calculated by dividing the French size by 3. [ 2 ]

  3. Width across flats - Wikipedia

    en.wikipedia.org/wiki/Width_across_flats

    A few sizes are close enough to interchange for most purposes, such as 19 mm (close to 3 ⁄ 4 inch (19.05 mm)), 8 mm (close to 5 ⁄ 16 inch (7.94 mm)) and 4 mm (close to 5 ⁄ 32 inch (3.97 mm)). In reality, a wrench with a width across the flats of exactly 15 mm would fit too tightly to use on a bolt with a width across the flats of 15 mm.

  4. 8 mm film - Wikipedia

    en.wikipedia.org/wiki/8_mm_film

    "Super 8" 8 mm films. 8 mm film is a motion picture film format in which the film strip is eight millimetres (0.31 in) wide. It exists in two main versions – the original standard 8 mm film, also known as regular 8 mm, and Super 8. Although both standard 8 mm and Super 8 are 8 mm wide, Super 8 has a larger image area because of its smaller ...

  5. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    Fontanini produces 5 inch nativity scene figures at this scale. 1:14: 0.8571428 in: 21.77 mm Tamiya Tamiya 56301 RC 1:14 King Hauler, RC Tractor Trucks 1:14 Scale. 1:13.71: 22.225 mm Model railway scratchbuilders' scale at 7 ⁄ 8 inches to a foot, commonly used with 45 mm gauge track to represent 2 ft gauge prototypes. 1:13: 59 ⁄ 64 in: 23.44 mm

  6. List of rail transport modelling scale standards - Wikipedia

    en.wikipedia.org/wiki/List_of_rail_transport...

    Using 32 mm (1.26 in) - 0 gauge - track, there is an extensive range of 16 mm to the foot scale [1:19] live-steam and other types of locomotives, rolling stock and accessories. Many of these models are dual gauge, and can be converted to run on 45 mm (1.772 in) track , and radio control is common.

  7. List of tablet PC dimensions and case sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_tablet_PC...

    Tablet cases sizes Tablet PC Height Width Depth Screen Case size Acer Iconia Tab A500 [1]: 10.2 in (260 mm) 7 in (180 mm) 0.52 in (13 mm) 10.1 in (260 mm)

  8. 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).

  9. United States Mint coin sizes - Wikipedia

    en.wikipedia.org/wiki/United_States_Mint_coin_sizes

    17.9 mm 2.5 g 1796–1964 $2.50 Gold Quarter Eagle 18 mm 4.2 g 1796–1929 Small Cent 19.05 mm 2.5 g 1943 Small Cent 19.05 mm 3.11 g 1864-1982 Small Cent 19.05 mm 4.67 g 1856-1864 2.5 g 1982–present Three Dollar 20.5 mm 5.01 g 1853–1876 Nickel 21.21 mm 5 g 1866–present Nickel 21.21 mm 5 g 1942–1945 Twenty Cent 22 mm 5 g 1875–1878 $5 ...