Casino history is easier to see up close: in cards worn smooth, roulette wheels...

https://kilo-wiki.win/index.php/Slot_Cabinet_History:_Why_the_Machine_Became_the_Whole_Game_Space

Casino history is easier to see up close: in cards worn smooth, roulette wheels built for single-zero or double-zero play, and slot reels shaped by changing tastes. These objects reveal the people and choices behind the games.