As the inventor of the commercial calculator in 1912, Monroe has earned the trust of Fortune 500 companies, non-profit organizations and government agencies. Customers commonly buy ribbons and paper rolls for their calculators at the same time. To make that process easier Monroe has created premium supply kits that include the best quality (6) ribbon spools and (12) single-ply paper add rolls.

Monroe’s engineers have the highest standards in the calculator industry. They produce the darkest printing black/red ribbons on the market. Their factory uses a true red ink that is extremely rich in color and developed by Monroe, unlike the orange tint you see with inferior versions from other brands.

Monroe’s premium single-ply add roll paper tapes are 2 ¼” x 150’ in size and are offered on an impressive 20 lb paper stock, the thickest in the industry and exclusively offered by Monroe.

To maintain the darkest print on your paper tape, users of Monroe products are suggested to change their ribbons after replacing approximately 3 paper tape rolls.

These premium universal twin-spool ribbons and add rolls are compatible with all printing calculators that take ribbon spools. Brands such as: Canon, Casio, Innovera, Monroe, Sharp, and Victor. The Monroe P65M ribbon is a superior replacement for Nu-Kote BR80C, Porelon PR-511, Porelon 11216, Dataproducts R3027BR80C. Simply put, this is the best calculator supply kit you can buy.