As the inventor of the commercial calculator in 1912, Monroe Systems for Business has earned the trust of fortune 500 companies, nonprofit 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 has since developed an entry level mediumduty calculator that will outlast and outperform competing models. The Monroe 6120x offers the best value in its category. With a 12digit display and a print speed of 3.6 lines per second, the simple design and adding machine functionality make the 6120x perfect for small businesses, office, or home use. The Monroe Systems for Business 6120x places a wide array of productivity oriented features at your fingertips. This model contains a 4key independent memory. Rounding may be set to standard, 5/4 rounding, round up, or truncate. Use the backspace key to correct entries, or the costsell margin feature to compute profit margins. The addition of extra large plus and minus keys help make the Monroe Systems for Business 6120x a favorite among 10key users. The 6120x may be used as a printing or display only calculator. Those who know, choose Monroe. 12digit print/display 4key independent memory group, grand total, tax, tax + and tax , ncount, markup, markdown percent, % +, % , percent change decimal settings: +,F,0,1,2,3,4 backspace and error correct features black & red print with print speed of 3.6 lines per second perfect for small businesses, office, or home use. Includes: Monroe 6120x printing calculator, paper roll, and Monroe ribbon spool. Paper: 2 1/4 single or twoply paper tape ribbon: P65m (twin spools) calculators being substituted for the Monroe 6120x line: Canon: Mp11dx, p23dhv, mp25dv, mp21dx, p170dh Casio: Fr2650tm, dr210 innovera: 16000 sharp: El2192rii, el2196bl victor: 12204 twocolor, 12282 twocolor, 1297 twocolor, 12304 fluorescent.