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While HO scale is a 1:87 scale (3.5 mm to 1 foot), resulting in a 16.5 mm (0.65 in) gauge from real life prototype 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge standard gauge. Conversely, modeling standard gauge in Lego trains would yield a scaling of (37.5:1435 =) 1:38.3.
1:45: 6.773 mm This is the scale which MOROP has defined for O scale, because it is half the size of the 1:22.5 Scale G-gauge model railways made by German manufacturers. [citation needed] 1:43.5: 7.02 mm: Model railways (0) Exact O scale of 7 mm = 1 foot. 1:43: 7.088 mm: Die-cast cars: Still the most popular scale for die-cast cars worldwide ...
Thus the scale and approximate prototype gauge are represented, with the model gauge used (9 mm for H0e gauge; 6.5 mm for H0f gauge) being implied. [ 2 ] The scales used include the general European modelling range of Z, N, TT, H0, 0 and also the large model engineering gauges of I to X, including 3 + 1 ⁄ 2 , 5, 7 + 1 ⁄ 4 and 10 + 1 ⁄ 4 ...
1:87: 10.5 mm H0 scale using 3-scale-foot narrow-gauge track. HOe gauge: 1:87: 9 mm European HO scale narrow-gauge models using 9 mm (0.354 in) (the same as N scale) track to represent prototypes with gauge between 650 and 850 mm (25.6 and 33.5 in), particularly 750 mm (2 ft 5 + 1 ⁄ 2 in) and 760 mm (2 ft 5 + 15 ⁄ 16 in) gauge. HOn2 gauge ...
The other NEM defined narrow gauges for H0 scale are H0m gauge (using 12 mm / 0.472 in gauge originally TT scale track) for models of 1,000 mm (3 ft 3 + 3 ⁄ 8 in) gauge and similar prototypes and H0i or H0f gauge (using Z scale 6.5 mm / 0.256 in track) for prototypes around 600 mm (1 ft 11 + 5 ⁄ 8 in) – the most popular gauge for ...
Some railways, primarily in the northeast, used standard gauge of 4 ft 8 + 1 ⁄ 2 in (1,435 mm); others used gauges ranging from 2 ft (610 mm) to 6 ft (1,829 mm). As a general rule, southern railroads were built to one or another broad gauge, mostly 5 ft ( 1,524 mm ), while northern railroads that were not standard-gauge tended to be narrow-gauge.
On30 uses the American O scale of 1 ⁄ 4 inch to the foot, (ratio 1:48) to operate trains on HO gauge (16.5 mm / 0.65 in) track.The 30 indicates the scale/gauge combination is used to model 2 ft 6 in (762 mm) narrow gauge prototypes, although it is often used to model 2 ft (610 mm) and 3 ft (914 mm) gauge prototypes as well.
The track is often multi-gauged, to accommodate 5 in (127 mm), 3 + 1 ⁄ 2 in (89 mm), and sometimes 2 + 1 ⁄ 2 in (64 mm) gauge locomotives. The smaller gauges of miniature railway track can also be portable and is generally 3 + 1 ⁄ 2 in ( 89 mm )/ 5 in ( 127 mm ) gauge on raised track or as 7 + 1 ⁄ 4 in ( 184 mm )/ 10 + 1 ⁄ 4 in ( 260 ...