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
SciPlus-3200 Scientific Calculator - Sight and Sound Technology
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Casio Maths UK on Twitter: "@TLMaths 'Classwiz' is the technology this generation of calculator uses. The UK version is the fx-991EX. UK models should have a 'UK's No.1 Scientific Calculator Brand' in
Plus 509/S Mechanical calculator, 1940s, Green metal, UK, Bell Punch