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  2. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    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 The scale used during World War II by the U.S. Navy for aircraft recognition. 1:426: 0.028: 0.715 mm Scale used by Revell for USS Arizona, Pennsylvania, Norton Sound, and Pine Island ships.

  3. Snellen chart - Wikipedia

    en.wikipedia.org/wiki/Snellen_chart

    At exactly 6 metres' distance from the patient, the letters on the 6/6 line shall subtend 5 minutes of arc (such that the individual limbs of the letters subtend 1 minute of arc), which means that the chart should be sized such that these letters are 8.73 mm tall and the topmost (6/60) "E" should be 87.3 mm tall.

  4. 1:285 scale - Wikipedia

    en.wikipedia.org/wiki/1:285_scale

    1:285 scale vehicles and 1:300 infantry from Heroics & Ros. 1:285 scale or 6 mm figure size is a US Army scale introduced in the late 1960s, and used for wargames and some scale model dioramas. It is used in miniature wargaming to depict large battles in a relatively small gaming area. [1] 1:300 scale (5 mm scale) is an almost identical NATO ...

  5. N scale - Wikipedia

    en.wikipedia.org/wiki/N_scale

    Rail height (in thousandths of an inch) is expressed as a "code": thus, Code 55 rails are 0.055 inches (1.4 mm) high while Code 80 rails have a height of 0.080 inches (2.0 mm). [ 2 ] [ 3 ] Common real railroad rails are at least 6 inches (150 mm) tall and can be taller on some roads, so at true scale the rails would be about 0.040 inches (1.0 ...

  6. Brannock Device - Wikipedia

    en.wikipedia.org/wiki/Brannock_Device

    The Brannock Device is a measuring instrument invented by Charles F. Brannock for measuring a person's shoe size. ... width, and arch length of ... (148 mm) 6 inches ...

  7. OO gauge - Wikipedia

    en.wikipedia.org/wiki/OO_gauge

    This also allowed more space to model the external valve gear. The resulting HO track gauge of 16.5 mm represents 4 feet 1.5 inches at 4 mm-to-the-foot scale; this is 7 inches under scale, or approximately 2.33 mm too narrow. In 1932, the Bing company collapsed, but the Table Railway continued to be manufactured by the new Trix company. Trix ...

  8. Miniature model (gaming) - Wikipedia

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

    Another popular scale is 1/72 or 1 inch equals 6 foot which uses 20 mm, to 25 mm miniatures. It is mostly used for historical gaming in part due to a wide selection of 1/72 scale models. Figures are commonly used with a variety of scales. It is not uncommon for there to be a mismatch between the game scale and miniature size.

  9. Unit of length - Wikipedia

    en.wikipedia.org/wiki/Unit_of_length

    A unit of length refers to any arbitrarily chosen and accepted reference standard for measurement of ... (25.4 mm) foot (12 inches, 0. ... knows the approximate width ...