The Monroe Difference
As the inventor of the commercial printing calculator in 1912, Monroe has earned the trust of Fortune 500 companies, non-profit organizations and government agencies, including the likes of NASA. Even Hollywood has recognized the strength of the Monroe brand as its products have landed on major television networks and hit series including the show Madmen. Monroe Systems for Business are forerunners in producing technology tools that empower businesses, schools, and individuals to succeed. Headquartered in Pennsylvania, Monroe has a continued commitment to creating durable and reliable products, along with providing superior customer support known as ‘The Monroe Spirit.
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Step 1Turn OFF the calculator. Remove excess paper tape. Remove the printer cover (Note how ribbon feeds, around guides and between print wheels and platen; black band up). |
Step 2Lift out cartridge by moving the lever to the center; then move and lift out cartridge. |
Step 3Holding new cartridge over spindles with black band up and exposed portion of ribbon on side nearest print wheels, place cartridge on spindle and engage cartridge. Replace printer cover. Turn ON the calculator. |
6120X | 2020PlusX | 122PDX | 8130X | 8145X | UltimateX | |
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Print Speed | 3.6 lines/second | 4.1 lines/second | 4.3 lines/second | 5 lines/second | 5 lines/second | 5 lines/second |
Type of Calculator | Medium-Duty | Medium-Duty | Medium-Duty | Heavy-Duty | Heavy-Duty | Heavy-Duty |
Independent (4) Key Memories | 1 | 1 | 1 | 1 | 2 | 2 |
Decimal Selections | +,F,0,1,2,3,4 | +,F,0,2,3,4,6 | +,F,0,1,2,3,4 | +,F,0,1,2,3,4,6 | +,F,0,1,2,3,4,6 | +,F,0,1,2,3,4,6 |
Display and Print Screen | 12-digit | 12-digit | 12-digit | 12-digit | 14-digit | 12-digit |
Tax with Tax+ and Tax- | ? | ? | ? | ? | ? | |
Cupped Keys | ? | ? | ? | ? | ||
Grand Total/Accumulator Lamp (Exclusive Monroe Feature) | ? | ? | ? | |||
Two Column Addition (Exclusive Monroe Feature) | ? | ? | ? | |||
Enclosed Paper Roll and Internal Storage for Paper Roll (Exclusive Monroe Feature) | ? | ? | ? |
Monroe Foam Wedge | Monroe Paper Rolls | Monroe M33X Ribbon | ||
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Description | Universally Sized Foam Calculator Stand For Medium-Duty Printing Calculators | The only 20 lb. 2 ¼" X 150′ Single-Ply Bond Paper Rolls on the Market | Offers Monroes Exclusive True Red Color, Heaviest Inking Saturation on the Market |
As the inventor of the first commercial calculator in 1912, Monroe has earned the trust of Fortune 500 companies, non-profit organizations, and government agencies, including NASA.
Our calculators are known industry-wide as the top-of-the-line calculator on the market today. Our reputation has been built on outstanding quality and customer support.
Despite being a 100+ year-old company, we treat it as a startup. Our products have withstood the test of time, but we are constantly looking for new ways to innovate.