{"product_id":"walthersproto-105306-scale-test-car-union-pacific-903148-ho","title":"WalthersProto 105306 | Scale Test Car - Union Pacific #903148 | HO Scale","description":"\u003cdiv class=\"sectionContent\"\u003e\n\u003cp\u003eAdd prototypical operations to your layout with the WalthersProto Scale Test Car, decorated for Union Pacific as car #903148. Real railroads used these heavyweight cars to calibrate track scales, and they were regularly hauled between yards for reweighing — giving you a great excuse to run one at the rear of a train, spot it at an industry, or pair it with the Walthers Cornerstone Track Scale. The diecast body gives this HO scale car real heft, and it comes ready to run with metal wheels and knuckle couplers.\u003c\/p\u003e\n\u003ch3 class=\"sectionTitle\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDiecast metal body for maximum weight, just like the prototype.\u003c\/li\u003e\n\u003cli\u003eUnion Pacific–specific details including side and top access doors, power hand brake, and exposed wheel bearings.\u003c\/li\u003e\n\u003cli\u003eFactory-installed wire grab irons and multiple photo-etched brass placards matching the prototype.\u003c\/li\u003e\n\u003cli\u003e33\" scale RP-25 turned metal wheels for smooth, reliable tracking.\u003c\/li\u003e\n\u003cli\u003eProto MAX metal knuckle couplers installed.\u003c\/li\u003e\n\u003cli\u003eLimited-run release from WalthersProto.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"sectionTitle\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWalthersProto\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eItem Number\u003c\/td\u003e\n\u003ctd\u003e920-105306\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoad Name\u003c\/td\u003e\n\u003ctd\u003eUnion Pacific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoad Number\u003c\/td\u003e\n\u003ctd\u003e903148\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScale\u003c\/td\u003e\n\u003ctd\u003eHO Scale (1:87)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEra\u003c\/td\u003e\n\u003ctd\u003eTransition Era – Modern\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody\u003c\/td\u003e\n\u003ctd\u003eDiecast metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCouplers\u003c\/td\u003e\n\u003ctd\u003eProto MAX metal knuckle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheels\u003c\/td\u003e\n\u003ctd\u003e33\" RP-25 turned metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3 class=\"sectionTitle\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this car ready to run out of the box?\u003c\/strong\u003e\u003cbr\u003eYes — it comes fully assembled with couplers and metal wheels installed. Just set it on the rails.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy would a railroad own a scale test car?\u003c\/strong\u003e\u003cbr\u003eRailroads billed customers by weight, so track scales had to be accurate. These cars were built to an exact known weight and used to calibrate scales across the system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat era does it fit?\u003c\/strong\u003e\u003cbr\u003eScale test cars served for decades, so this car looks at home on layouts set anywhere from the transition era right up to the modern day.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work with my existing couplers?\u003c\/strong\u003e\u003cbr\u003eYes — the installed Proto MAX metal knuckle couplers are compatible with Kadee and other standard HO knuckle couplers.\u003c\/p\u003e\n\u003ch3 class=\"sectionTitle\"\u003eExplore More\u003c\/h3\u003e\n\u003cp\u003eRound out your freight consist with more \u003ca href=\"https:\/\/squeakystrains.com\/collections\/rolling-stock\"\u003erolling stock\u003c\/a\u003e, browse our full \u003ca href=\"https:\/\/squeakystrains.com\/collections\/ho-scale\"\u003eHO scale collection\u003c\/a\u003e, or see everything from \u003ca href=\"https:\/\/squeakystrains.com\/collections\/walthersproto\"\u003eWalthersProto\u003c\/a\u003e at Squeaky's Trains \u0026amp; Things.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"WalthersProto","offers":[{"title":"Default Title","offer_id":47657629614335,"sku":"920-105306","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0443\/5968\/0161\/files\/scale_test_car_920-105306_big.jpg?v=1784044091","url":"https:\/\/squeakystrains.com\/products\/walthersproto-105306-scale-test-car-union-pacific-903148-ho","provider":"Squeaky's Trains \u0026 Things","version":"1.0","type":"link"}