The top plane of the first "Automatic Totalisator," designed by George Julius (1913). It was a mechanical computer designed for calculating and displaying bets at horse races.

There are more really awesome pictures of it, at this link:
https://www.cs.auckland.ac.nz/historydisplays/SecondFloor/Totalisators/FirstJulius/FirstJuliusMain.php#tickets

Mathematics/Design

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Text art: objkt.com/@sinusoidalsnail

Sometimes it's hard to believe how big it all started
Thanks!
100 $degen

Artist. Creating pictures with code and machines. 
In search of math beauty