Casio "prism" FX cg50 graphing calculator. What's the difference between these two (UK non-prizm on left and American prizm on the right)? : r/calculators
Casio FX-CG50 Graphic Calculator with High-Resolution Colour Display + Calcio Exp: Amazon.co.uk: Stationery & Office Supplies
fx-CG50 - Casio Calculators
Genuine Sealed Casio FX-CG50 3D Graph Catalogue Function Graphic Calculator LAST 4549526600814 | eBay