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In the early 1990s, the Atlas Tool Co. changed its name to Atlas Model Railroad Company, Inc. In 1997 Atlas O, LLC was established as a separate business entity dedicated to producing multiple lines of O scale model railroad products including track, freight cars, locomotives and accessories, co-founded and led by James J. Weaver.
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 ...
The Trudaine Atlas, created from 1745 to 1780, was the most accurate set of cartographic plans of roads and topography of France made during its period. The scale of the maps show far more detail than is found on the famous maps made by César-François Cassini de Thury and family. The 62 bound volumes contain more than 3,000 plates prepared by ...
In most European countries, the largest scale topographic map series is a 1:25.000 scale series. Notable exceptions are Austria (1:50,000) and Finland (1:20,000). Many non-European states limit the largest scale of their map series, usually to 1:50,000 scale, frequently due to the large size of the country covered (and hence for financial reasons).
Alvin Jewett Johnson (1827-1884), also known as A.J. Johnson, led the New York City publishing company which published Johnson's Family Atlases from 1860 to 1887. These atlases were published under his name alone or with Browning (1860–62) and Ward (1862-1866), and are fascinating because the sequence of atlas maps documented the growth of the United States during this quarter century ...
A key advantage for three-rail track is balloon loops, where a train enters a loop through a turnout and then exits through the same turnout in order to change the train's direction. With two-rail track, when the track reverses on itself, this causes a short circuit. With three-rail track, because the center rail remains constant and the outer ...
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In the 2004 Guinness World Records, Train Mountain is recognized as the “Longest Miniature Hobby Railroad”. [4] At the time Train Mountain was recognized by Guinness, it was reported to have 69,900 feet (13.24 mi; 21.3 km) of 7 + 1 ⁄ 2 in (190.5 mm) gauge mainline track and 133,250 feet (25.237 mi; 40.61 km) of total track including yards, sidings, spurs, and connector tracks.