Casino history lives in the objects people used: 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 used: cards, roulette wheels, and slot reels. From the mechanics of single-zero and double-zero wheels to a slot machine patented in 1895, these artifacts reveal how gambling changed in everyday life.