This is a Model C ADDOMETER portable adding machine, offered in excellent used condition (EUC). The listing includes the device, a stylus, and its original platform. As a rare vintage piece, it appeals to collectors of office antiques or enthusiasts of mechanical calculators. It may also serve as a functional conversation piece for a desk or study. Free shipping is available for this item. While it is described as complete with its core components, prospective buyers should check the listing for full details regarding its operational history, precise dimensions, and material composition before purchase. EUC Rare Model C ADDOMETER Portable Adding Machine Directions, Stylus, Platform. Made in United States. Listed at 75.00 USD. This compact and portable machine is designed for adding calculations and features a stylus for inputting numbers. Look closely at the dial pattern of this one compared to others. It starts with 1 white dial on the left then 3 red dials, 2 white dials and ends with 2 red dials.