That Dragon Guy on Twitter: "MOAR VINTAGE STUFF: sure, one can buy a cheap “credit card size” calculator at a dollar store nowadays, but they're always a few millimeters thick. Casio's SL-800
Casio SL-800WE | Science Museum Group Collection
Casio - SL-800 - - LCD calculator - Casio SL800 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA