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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.
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.
43.54 mm Common scale utilized by Japanese companies for figures of anime characters, especially [citation needed] when the portrayed character is supposed to be young in age. The scale of a standard 4-stud × 2-stud Lego brick compared to the unit size of a standard house brick (9 × 4 + 1 ⁄ 2 × 3 inches). 1:6: 2 in: 50.80 mm
This scale is today the most popular modelling scale in the UK, although it once had some following in the US (on 19 mm / 0.748 in gauge track) before World War II. 00 or "Double-Oh", together with EM gauge and P4 standards are all to 4 mm scale as the scale is the same, but the track standards are incompatible. 00 uses the same track as HO (16 ...
Version 2.4 of the standard was published in July 2024. As of 2024, there are standards for HO and N Scales, with an O Scale version under development in collaboration with the Aus7 O Scale Modeller's Group. The AMRA standard is similar to the FREMO standard, but uses a slightly lower rail height of 1,200 mm and uses M6 wing bolts. [8]
16.5 mm (0.65 in) gauge corresponds to 4 ft 8 + 1 ⁄ 2 in (1,435 mm) standard gauge in H0 (half-0) 3.5 mm/1 foot or 1:87.1. This arose due to British locomotives and rolling stock being smaller than those found elsewhere, leading to an increase in scale to enable H0 scale mechanisms to be used.
3.5 mm or 3.5mm may refer to: HO scale , in rail transport modelling, 1:87 scale, with rails 16.5 mm apart, representing standard gauge 3.5 mm jack , used on audio and mobile telephony equipment
HO – 3.5 mm scale using the same 16.5 mm (0.65 in) gauge track as OO. EM – 4 mm scale using 18.2 mm (0.717 in) track. P4 – A set of standards using 18.83 mm (0.741 in) gauge track (accurate scale standard gauge track). 00-SF – Uses 16.2 mm (0.638 in) track with ordinary OO wheelsets. Allows the tighter trackwork tolerances of EM without ...