 | Simply the most convenient, accurate way to perform cost-sell-margin calculations.Preprogrammed functions solve cost-sell-margin problems; enter any two variables and the third appears instantly. Automatic constant quickly performs repetitive calculations. Desktop, Basic, Solar Powered, Regular Display, Large Key Size, 10 Digit Display Number of Reviews: 1 | Ratings:  | Best deal: $25
$25 - $26 from 5 stores. |