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  2. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    Inches per foot Millimetres per foot Common use Comments 1:20000: 0.015 mm: Sci-fi: Arii produced injection-molded kits in this scale of the very large Zentradi spacecraft from the science fiction anime series Macross. 1:4800: 0.064 mm: Sci-fi: This scale has been used for fictional spacecraft for the board game Star Cruiser, originally from ...

  3. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    For example, if the French size is 9, the diameter is 9/3 = 3.0; mm. It is seen that the French unit is fully redundant with the metric system but introduces potential for rounding errors. This metrication [broken anchor] problem is further complicated by the mixed use of metric and imperial units in medical professions using catheters.

  4. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    The microwave is between 1 meter to 1 millimeter. The millimetre ( international spelling; SI unit symbol mm) or millimeter ( American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length. Therefore, there are one thousand millimetres in a metre.

  5. 1:144 scale - Wikipedia

    en.wikipedia.org/wiki/1:144_scale

    1:144 scale is a scale used for some scale models such as micro/mini armor. 1:144 means that the dimensions of the model are 1/144 (0.00694) the dimensions of the original life-sized object; this equates to a scale of 1/2 inch per 6 feet of original dimension. For instance, an airplane 30 feet (9.14 m) in length would be a mere 2.5 inches (63.5 ...

  6. HO scale - Wikipedia

    en.wikipedia.org/wiki/HO_scale

    16.5 mm ( 0.65 in) Prototype gauge. Standard gauge. HO or H0 is a rail transport modelling scale using a 1:87 scale (3.5 mm to 1 foot). It is the most popular scale of model railway in the world. [1] [2] The rails are spaced 16.5 millimetres (0.650 in) apart for modelling 1,435 mm ( 4 ft 81⁄2 in) standard gauge tracks and trains in HO.

  7. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    Metric ( SI) units. 25.4 mm. A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement. It is equal to ⁠ 1 36 ⁠ yard or ⁠ 1 12 ⁠ of a foot. Derived from the Roman uncia ("twelfth"), the word inch is also sometimes used to translate ...

  8. 1:72 scale - Wikipedia

    en.wikipedia.org/wiki/1:72_scale

    1:72 scale. 1:72 scale is a scale used for scale models, most commonly model aircraft, where one inch on the model equals six feet (which is seventy-two inches) in real life. The scale is popular for aircraft because sizes ranging from small fighters to large bombers are all reasonably manageable and displayable.

  9. N scale - Wikipedia

    en.wikipedia.org/wiki/N_scale

    N scale is a popular model railway scale. [1] Depending upon the manufacturer (or country), the scale ranges from 1:148 to 1:160. Effectively the scale is 1:159, 9 mm to 1,435 mm ( 4 ft in ), which is the width of standard gauge railway. However the scale may vary to simulate wide or narrow gauge rail.