![CASIO fx-82 SUPER. I bought it in 1.992, use it in college, at the university and 20 years more at the office. Never changed battery and im not going to retire it CASIO fx-82 SUPER. I bought it in 1.992, use it in college, at the university and 20 years more at the office. Never changed battery and im not going to retire it](https://preview.redd.it/phuyskh67mx71.jpg?width=640&crop=smart&auto=webp&s=95c2267afe8ea680c9fcbc7579ae0a4403e69f14)
CASIO fx-82 SUPER. I bought it in 1.992, use it in college, at the university and 20 years more at the office. Never changed battery and im not going to retire it
![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 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](https://i.redd.it/ppyfb47db2r31.jpg)
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
![Amazon.com: Casio Fx-82es Fx82es Plus Bk Display Scientific Calculations Calculator with 252 Functions : Office Products Amazon.com: Casio Fx-82es Fx82es Plus Bk Display Scientific Calculations Calculator with 252 Functions : Office Products](https://m.media-amazon.com/images/I/71FG5RXMGJL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Casio Fx-82es Fx82es Plus Bk Display Scientific Calculations Calculator with 252 Functions : Office Products
![Amazon.com: Casio FX-82SP CW – Scientific Calculator, Recommended for Spanish and Portuguese Curriculum, 5 Languages, Over 300 Functions, Dark Grey : Office Products Amazon.com: Casio FX-82SP CW – Scientific Calculator, Recommended for Spanish and Portuguese Curriculum, 5 Languages, Over 300 Functions, Dark Grey : Office Products](https://m.media-amazon.com/images/I/91bJhPJIRdL._AC_UF350,350_QL80_.jpg)