![Paul Marks on X: "@zsk @jimeasterbrook Casio fx-29 calculator ... still working and eating all my pi since 1977. Fitted well in the knee pockets of high waisters - anyone remember those? Paul Marks on X: "@zsk @jimeasterbrook Casio fx-29 calculator ... still working and eating all my pi since 1977. Fitted well in the knee pockets of high waisters - anyone remember those?](https://pbs.twimg.com/media/EZ_e4MSXYAAON0m.jpg:large)
Paul Marks on X: "@zsk @jimeasterbrook Casio fx-29 calculator ... still working and eating all my pi since 1977. Fitted well in the knee pockets of high waisters - anyone remember those?
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Casio - fx-29 - - Vintage calculator - Casio fx29 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![Vintage Casio FX-29 Calculator, Hobbies & Toys, Collectibles & Memorabilia, Vintage Collectibles on Carousell Vintage Casio FX-29 Calculator, Hobbies & Toys, Collectibles & Memorabilia, Vintage Collectibles on Carousell](https://media.karousell.com/media/photos/products/2021/2/11/vintage_casio_fx29_calculator_1613056271_5067aaf4_progressive.jpg)