{"product_id":"9781847978639","title":"Operating Signals, Points and Level Crossings: A Mechanical, Electrical and Electronic Guide for Railway Modellers","description":"\u003cp\u003eThe history of semaphore and colour light signals is outlined and the implications for modellers is clearly explained. A variety of different types of points, signals and level crossings is then illustrated with detailed instructions describing how to make them work.\u003c\/p\u003e\u003cp\u003eSimple, tried and tested mechanical and electrical methods used by modellers are explained together with modern electronic approaches, which are described in a way that enables them to be easily understood. The reader is taken step-by-step through various projects, and diagrams and photographs are provided throughout, including wiring diagrams for frogs, signals and level crossings.\u003c\/p\u003e","brand":"Crowood Press, The","offers":[{"title":"Default Title","offer_id":47039262949616,"sku":"9781847978639","price":34.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781847978639_p0.jpg?v=1763749210","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781847978639","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}