The Casio MS-8F calculator has all the basic functions you need along side additional ones like Tax & change sign key. The extra large display makes it easier on the eyes.
The MS-8F includes the following functions:
Tax Keys / Tax Calculations
Currency Conversion (3 rates)
3 Key Memory
Change Sign Key
% Key
Double size + Key
3 Digit Comma Marker
Function Command
Large plastic keys
12 months warranty. Dealer or end user to return with proof of purchase to: Casio Electronics Co. Limited,Operational Service Division, Harp View, 12 Priestley Way, London, NW2 7JD. Call Technical support 0208 4527253.