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Once you have your railroad theme, track shape and size in your mind it is a great idea to have a scale-sized track plan in front of you while you work. I have used both full-sized track plans from your CAD system and scale sized track plans. The full size track plans work great on substantial layouts, but I'm not sure these are really worth the pain of learning problematic laptop or computer to create smaller layouts. Scale sized track plans work all right, say 1 inch = 1 foot.
Sunglasses allow better vision in bright daylight, and may protect one's eyes against damage from high levels of ultraviolet light. Typical sunglasses are darkened for protection against bright light or glare; some specialized glasses are clear in dark or indoor conditions, but turn into sunglasses when in bright light. Most sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be ordered. Specialized glasses may be used for viewing specific visual information (such as stereoscopy) or 3D glasses for viewing three-dimensional movies. Sometimes glasses with no corrective power in the lenses are worn simply for aesthetic or fashion purposes. Even with glasses used for vision correction, a wide range of designs are available for fashion purposes, using plastic, wire, and other materials.
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