{"product_id":"operating-signals-points-and-level-crossings-isbn-9781847978639","title":"Operating Signals, Points and Level Crossings","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":"The Crowood Press UK","offers":[{"title":"Default Title","offer_id":44897083359461,"sku":"NP9781847978639","price":34.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1842\/7735\/files\/O_89ec44c1-ef5a-4f07-b902-6a8f73a8f3ff.jpg?v=1773104349","url":"https:\/\/k12savings.com\/products\/operating-signals-points-and-level-crossings-isbn-9781847978639","provider":"K12savings","version":"1.0","type":"link"}