Casino history comes into focus through objects: cards, roulette wheels, and...

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

Casino history comes into focus through objects: cards, roulette wheels, and slot reels. Charles Fey’s 1895 Market Street workshop in San Francisco made slot machine history, while single-zero and double-zero wheels reveal how design shaped the odds.