Sharp 14-digit Tax Desk Calculator EL-145T-BLSharp EL 145T BL 14 digit Tax Desk Calculator This 14 digit desk calculator is compact but packs in a wide range of helpful features. The twin power feature ensures that the calculator will not stop working when you need it and when you leave it on it will automatically switch off. The calculator allows you to add or remove tax from a value by simply pushing one button. Features 14 digits Twin Powered 4 key memory Correction key & Conversion Key Large