T gauge

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T gauge
Scale	1⁄40 in (0.635 mm) to 1 ft (305 mm) 2⁄75 in (0.677 mm) to 1 ft (305 mm) 2 mm to 1 m
Scale ratio	1:450 (Japanese 3 ft 6 in (1,067 mm) gauge) 1:480 (Standard gauge) 1:500 (Standard and broad gauge)
Model gauge	3 mm (0.118 in)
Prototype gauge	Commercially available models are of 3 ft 6 in (1,067 mm) gauge.

T gauge (1:450, 1:480 and 1:500) is a model railway scale with a track gauge of 3 mm (0.118 in), referred to as "three-millimeter gauge" or "third of N scale." It was introduced at the Tokyo Toy Show in 2006 by KK Eishindo of Japan and went on sale in 2007. It is the smallest commercial model train scale in the world. Since mid-2009, Railway Shop (Hong Kong) is the exclusive licensed manufacturer.

The models are battery-powered by a throttle (with an optional AC adapter) at a maximum output of 4.5 V DC. To improve power pickup and tractive effort, the powered cars are fitted with magnetic wheels.

The first train released was the Japanese 103 series commuter train in different versions. Each standard trainset comes with two powered cars, which are located in the middle of the train. The front and rear cars are equipped with directional headlights. The tiny pantographs are made of etched stainless steel. The Hankyu Railway 9000 EMU Series and the Kiha 40 DMU were added to the line of available trainsets in early 2010 and feature improved mechanisms for better performance.

The track is offered as either flexible sections of rail and sleepers at 200, 500 and 750 millimetres (7.87, 19.69 and 29.53 in), or as rigid sections with roadbed, and a small selection of pieces without roadbed. Rigid curved track is available with four different radii: 120 millimetres (4.72 in), 132.5, 145, and 157.5 millimetres (5.22, 5.71, and 6.20 in) in 15° and 30° arc lengths; straight tracks are 30, 60, and 200 millimetres (1.181, 2.362, and 7.874 in) long. Points (switches or turnouts) are available in a single length right and left hand with manual or electric throw. Diamond crossings are made in 30° and 90° in 60mm length. Several miscellaneous track sections are also sold including power, isolating, and level grade crossing. The standard sectional track is "roadbed" style, with integrated ballast, or without roadbed as "fine scale". "Fine scale" track is available in Track without roadbed is available as 60 and 70 millimetres (2.36 and 2.76 in) curved sections of 90° arc length; straight tracks are 60 millimetres (2.362 in) long. The rail is approximately 0.040 inches (1.016 mm) high ("Code 40"). Track pieces are connected with gold-plated metal rail joiners plus plastic clips in the roadbed. Different types of dummy catenary masts can be attached to the track.

In addition to the trains and track, available accessories include a large variety of scenic items, including houses and apartment buildings, figures and animals, trees, bikes, boats, and more. The houses are assembled and pre-painted, with fully detailed interiors that the modeller can install. The plastic figures, etched metal bikes, and other small items have small pins to make installation on a layout easier; the modeller simply makes a hole and inserts the detail into the hole using a toolkit available from Eishindo. Road signs, traffic lights, and other street furniture are available, as is a street decoration decal sheet, which comes with a scale ruler to aid in the placement of markings and details.

One unusual side effect of the magnetic wheels of the powered units is that they can climb acute grades (as steep as 45 degrees).

T-scale trains may be used with model airplanes and model airports in the 1:400–1:500 scale range. Eishindo has been planning to produce a modest line of airplanes and accessories of their own.

• Rail transport modelling scales
• ZZ scale

http://www.kk-eishindo.co.jp/ The manufacturer—and creator—of T Gauge

Wikimedia Commons has media related to T scale.

• www.tgauge.com, largest online vendor serving customers internationally.
• (in German) uwefenk.de, German Railway Models in T Gauge
• TalkingTGauge.net, a discussion forum for T Gauge modelling, techniques and layouts