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Minimum gauge railways have a gauge of most commonly , , , , or . The notion of minimum gauge railways was originally developed by estate railways〔 and by the French company of Decauville for industrial railways. ==History== The term was originally conceived by Sir Arthur Percival Heywood who used it in 1874 to describe the principle behind his Duffield Bank Railway, specifically its 15-inch gauge, distinguishing it from a "Narrow Gauge" railway. Having previously built a small railway of gauge, he settled on as the minimum that he felt was practical.〔 An important feature was that it was intended to be easy to lay on, for instance, a battlefield. A general aspect about minimum gauge railways is that the loading gauge is maximized, which is to say the dimension of the equipment is made as large as possible with respect to the track gauge, while still providing enough stability to keep it from tipping over. Also that it should be easy to lay and to move. A number of gauge railways were built in Britain to serve ammunition depots and other military facilities, particularly during the First World War. In France Decauville produced a range of portable track railways running on and tracks, most commonly in restricted environments such as underground mine railways, parks and farms. During World War II, it was proposed to expedite the Yunnan–Burma Railway using gauge, since such a small gauge can have the tightest of curves in difficult terrain. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「minimum gauge railway」の詳細全文を読む スポンサード リンク
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