![The Calculator/Abacus](https://static.urbandaddy.com/uploads/assets/image/articles/weekender/84987ntl_thumb_1.jpg)
The Calculator/Abacus
The standby: A pocket calculator.
The upgrade: A fully functional abacus built into a 1980s Sharp calculator, sold by the
purveyors of smart-looking randomness at Partners & Spade.
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