Casino history lives in the objects left behind: marked cards, roulette wheels,...

https://speedy-wiki.win/index.php/Roulette_Wheel_and_Ball:_Why_Movement_Is_Part_of_the_Design

Casino history lives in the objects left behind: marked cards, roulette wheels, and slot reels. A look at San Francisco’s 1895 gaming world traces how small design choices shaped play, from single-zero wheels to double-zero odds