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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 8 + 1 ⁄ 2 in) standard gauge tracks and trains in HO.
Park railroads, where 15 in (381 mm) minimum gauge models are based on 3 ft (914 mm) narrow gauge prototypes 1:2: 6 in: 152.40 mm "My Size" (3 ft) fashion dolls: 1:1.8 Playhome, Playhouse 1:1.5 Playhome, Playhouse 1:1: 12 in: 304.80 mm Full scale, life-size. Some models of real and fictional weapons and of scientific or anatomical subjects in ...
0.3048 m. 30.48 cm. 304.8 mm. The foot (standard symbol: ft) [1][2] is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, ′, is commonly used to represent the foot. [3] In both customary and imperial units, one foot comprises 12 inches, and one yard comprises three feet.
Generally, 1 gauge equipment works out to approximately 1:32 scale (roughly 10 mm = 1 foot). G scale at 1:22.5 means the 1 gauge track represents 1,000 mm (3 ft 3 + 3 ⁄ 8 in) metre gauge track. Such railways are to be found in, among other places, Switzerland, the inspiration source for many commercial G gauge models.
The large network of narrow-gauge sugar cane light railways, almost all 610 mm (2 ft) gauge, is not shown, Rail gauge in Australia. Rail gauge world Track gauge Rail gauge world Map Rail gauge world Map, 600mm. to 1676 mm. Rail gauge world Map, 597 mm. to 2140 mm. Triple-gauge track on turntable, Gladstone, South Australia.
Length. For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, which are the only four customary length measurements in everyday use. From 1893, the foot was legally defined as exactly 1200⁄3937 m (approximately 0.304 8006 m). [13] Since July 1, 1959, the units of length have been defined on the basis of 1 yd = 0 ...
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property ...
[1] 1:300 scale (5 mm scale) is an almost identical NATO standard scale. Both figure scales are based on the 1 mm = 1 ft calculation that reduces the average 1.72 m height of a human male to a 5.7 mm tall figure. "6 mm" is therefore used as a rounded-up reference to the scale.