Casio fx-82MS Scientific Calculator 2-Line Display 240 Function STAT Data Editor 4971850137931 | eBay
Scientific notation & memory function on a Casio fx-82/100AU PLUS 2nd Edition Scientific Calculator - YouTube
Casio FX82 calculator I bought in 1982 at the age of 15. Used it throughout school, my apprenticeship and work as a draughtsman. Don't use it much now but it still works
Working With Fractions on The Casio fx-82MS - YouTube
CASIO Calculator FX 82MS2 Middle School's student chemistry math SAT/AP exam scientific calculator children Science| | - AliExpress
Casio FX-82 ES PLUS Scientific Calculator Fx 82ES 4971850166986 | eBay