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  2. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    Dollhouse for a dollhouse scale for 1:12 dollhouses. Commonly used for mini armor. Used for 12 mm, and 12.5 mm figure scale miniature wargaming. 1:128: 3 ⁄ 32 in: 2.381 mm A few rockets and some fit-in-the-box aircraft are made to this size. 1:120: 0.1 in: 2.54 mm: Model railways (TT) Derived from the scale of 1 inch equals 10 feet.TT model ...

  3. List of rail transport modelling scale standards - Wikipedia

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

    Model railway scales and gauges are standardized in NEM 010, [1] which covers several gauges for each scale. Narrow gauges are indicated by an additional letter added after the base scale as follows: no letter = standard gauge (1,250–1,700 mm or 49.2–66.9 in) m = metre gauge (850–1,250 mm or 33.5–49.2 in) e = narrow gauge (650–850 mm ...

  4. Scale (ratio) - Wikipedia

    en.wikipedia.org/wiki/Scale_(ratio)

    The scale ratio of a model represents the proportional ratio of a linear dimension of the model to the same feature of the original. Examples include a 3-dimensional scale model of a building or the scale drawings of the elevations or plans of a building. [1] In such cases the scale is dimensionless and exact throughout the model or drawing.

  5. Curta - Wikipedia

    en.wikipedia.org/wiki/Curta

    A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.

  6. Miniature model (gaming) - Wikipedia

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

    1:52 – 1:48: Heroic scale of 32 mm miniatures. 1:50 scale is a popular size for diecast models from European manufacturers. 1:48 is commonly known as quarter scale or American O scale. 40 mm: ≈7 mm: ≈1:45 – 1:43: Older figures from the 60s and tend to be thinner / shorter than new metal ones. Close to O scale model railroads. 54 mm ...

  7. Drill bit sizes - Wikipedia

    en.wikipedia.org/wiki/Drill_bit_sizes

    ANSI B94.11M-1979 sets size standards for jobber-length straight-shank twist drill bits from 1/64 inch through 1 inch in 1/64 inch increments. For Morse taper -shank drill bits, the standard continues in 1/64 inch increments up to 1¾ inch, then 1/32 inch increments up to 2¼ inch, 1/16 inch increments up to 3 inches, 1/8 inch increments up to ...

  8. TT scale - Wikipedia

    en.wikipedia.org/wiki/TT_scale

    TT scale (from "table top") is a model railroading scale at 1:120 scale with a track gauge of 12 mm between the rails. It is placed between HO scale (1:87) and N scale (1:160). Its original purpose, as the name suggests, was to make a train set small enough to assemble and operate on a tabletop. The scale originated in the USA, but is today ...

  9. Kurtosis - Wikipedia

    en.wikipedia.org/wiki/Kurtosis

    Between the blue curve and the black are other Pearson type VII densities with γ 2 = 1, 1/2, 1/4, 1/8, and 1/16. The red curve again shows the upper limit of the Pearson type VII family, with γ 2 = ∞ {\displaystyle \gamma _{2}=\infty } (which, strictly speaking, means that the fourth moment does not exist).