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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: 615. Total items on page 18

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
Faller 140471 Lighting Kit For Jupiter Ferris Wheel $219.99 119227
Faller 180635 Lighting Kit For Ferris Wheel $54.99 118849
Faller 180636 Bulbs For Ferris Wheel Lighting Kit $21.99 118850
Faller 180647 LED Lighting Modules 12-16 Volt AC/DC White Five Units $21.99 119049
Faller 180671 Bulb Micro Cable Grain of Wheat White $2.99 119225
Faller 180695 Lighting Board with LED For Flickering Fire Effects $18.99 118844
Faller 180711 Lighting for Stroboscope Effects $18.99 119086
Atlas 10 001 649 Amtrak Locomotive, Electric, EMD AEM-7 $179.95 2015-03-01 117782
Atlas 10 001 654 Amtrak 953 Locomotive, Electric, EMD AEM-7 $179.95 2015-03-01 117784
Atlas 10 001 655 New Jersey Transit Locomotive, Electric, EMD AEM-7 $179.95 2015-03-01 117783
Atlas 10 001 662 Milwaukee Road E100 Locomotive, Electric, EMD AEM-7 $179.95 2015-03-01 117785
Atlas 10 001 664 Pennsylvania 4939 Locomotive, Electric, EMD AEM-7 $179.95 2015-03-01 117786
Atlas 10 001 666 Reading 2302 Locomotive, Electric, EMD AEM-7 $179.95 2015-03-01 117787
Atlas 8571 Amtrak 908 Locomotive, Electric, EMD AEM-7 $134.95 2000-08-01 117790
Atlas 8583 Amtrak 910 Locomotive, Electric, EMD AEM-7 $134.95 2000-08-01 117788
Atlas 8585 Amtrak 914 Locomotive, Electric, EMD AEM-7 $134.95 2000-08-01 117789
Rapido Trains 102003 $15.95 107851
Rapido Trains 102013 Easy Peasy Standard Passenger Car Interior Lighting Kit $15.95 107853