Monroe's top-of-the-line medium-duty calculator, the Monroe 122PDX, has been designed to outlast and outperform all competing models. This model is simply known for its dependability, which makes it a favorite among banks and credit unions. Its large 12-digit display and professional sized keyboard with oversized plus/minus keys make it a dependable tool for users. The Monroe 122PDX features our newly updated printer which, for the first time in Monroe history, is compatible with supplies such as the Monroe M33X ribbon cartridges, Monroe P65M ribbon spools and our signature 15 lb. or 20 lb. paper rolls. Using our high-quality Monroe supplies will provide you with the optimal print quality.