Casino history lives in things people handled: cards, roulette wheels marked...

https://wiki-cable.win/index.php/Slot_Reels_and_the_Viewing_Window:_Why_That_Frame_Matters

Casino history lives in things people handled: cards, roulette wheels marked single-zero or double-zero, and slot reels made to turn chance into spectacle. This article traces how small design choices reveal changing games and public tastes.