Casino history lives in the objects people handled: cards, roulette wheels, and...

https://varimail.com/articles/why-reels-became-the-default-way-to-show-slot-outcomes/

Casino history lives in the objects people handled: cards, roulette wheels, and slot reels. The shift from single-zero to double-zero wheels shows how a small mechanical change could shape play, odds, and the experience of a night at the tables.