Victor 9700 12-Digit Desktop Business CalculatorThis 12 digit calculator is perfect for desktop use either at home or in the office. Features an extra large LCD tilt display. Cost sell margin keys make for quick and easy calculations (simply enter two variables and the third automatically appears). Other functions include: mark up key, automatic tax keys, selectable decimal and rounding slide switches, square root key, grand total key, percent key, change sign key, backspace key, 3 key independent