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Lionel 2674050 HO Scale Maxson Scale Test Car Kansas City Southern KCS 12 Roadname_Sandersville SAN Walthers 910-1835 HO 50' ACFLionel 2674050 HO Scale Maxson Scale Test Car Kansas City Southern KCS 12 Proper billing for many commodities requires accurately weighing cars. To accurately weigh both loaded and empty cars, railroads and industries alike use track scales. These scales must be calibrated periodically and to do so, railroads use scale test cars which have a precise and controlled weight. Many of these track scales use small segments. To accurately test them, many of