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HO Scale Model Trains Database

Engines, Rolling Stock, Structures, and Accessories

At the 1935 Leipzig Spring Fair, an electric tabletop railway, Trix Express, was displayed to a gauge described as "half nought gauge", which was then abbreviated as gauge 00 ("nought-nought"). Märklin, another German firm, followed suit with its 00 gauge railway for the 1935 Leipzig Autumn Fair. The Märklin 00 gauge track that appeared more than ten years after Bing's tabletop railway had a very similar appearance to the previous Bing track. On the Märklin version, however, the rails were fixed to the tin 'ballast' as in the prototype, whilst the Bing tracks were simply stamped into the ballast, so that track and ballast were made of single sheet of metal.

According to the National Model Railroad Association (NMRA) standard S-1.2 predominantly used in North America, in HO scale, 3.5 mm (0.1378 in) represents 1 real foot (304.8 mm); this ratio works out to 1:87.0857142, usually rounded to 1:87.1. According to the MOROP standard NEM 010 predominantly used in Europe, the scale is exactly 1:87. In HO, rails are spaced 16.5 mm (0.64961 in) apart which models the standard railroad gauge of 1,435 mm (4 ft 8 in).

The name HO comes from 1:87 scale being half that of O scale, which was previously the smallest of the series of older and larger 0, 1, 2 and 3 gauges introduced by Märklin around 1900. In most English-speaking markets it is pronounced "aitch-oh" and written with the letters HO today, but in other markets remains written with the letter H and number 0 (zero), so in German it is pronounced as "hah-null".

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Total items in collection: 577. Total items on page 16

First or Primary Gallery Image Brand/Importer Stock Number Road/Company Name Road Letters/Reporting Mark Road/Reporting Number Prototype Original Retail Price Release Date ID
Tangent 18000-01 Boxcar, 40 Foot, PS-1 $34.95 2016-07-25 107302
Tangent 18010-01 Burlington Route CB&Q 19825 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107287
Tangent 18010-02 Burlington Route CB&Q 19828 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107288
Tangent 18010-03 Burlington Route CB&Q 19836 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107289
Tangent 18010-04 Burlington Route CB&Q 19839 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107290
Tangent 18011-01 Rio Grande D&RGW 67421 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107291
Tangent 18011-02 Rio Grande D&RGW 67422 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107292
Tangent 18011-03 Rio Grande D&RGW 67426 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107293
Tangent 18012-01 Illinois Central IC 15452 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107294
Tangent 18012-02 Illinois Central IC 15455 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107295
Tangent 18012-03 Illinois Central IC 15461 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107296
Tangent 18012-04 Illinois Central IC 15468 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107297
Tangent 18013-01 Milwaukee Road MILW 4609 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107298
Tangent 18013-02 Milwaukee Road MILW 4611 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107299
Tangent 18013-03 Milwaukee Road MILW 4613 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107300
Tangent 18013-04 Milwaukee Road MILW 4620 Boxcar, 40 Foot, PS-1 $44.95 2016-07-18 107301