A Mechanical Addiator is a compact arithmetic machine (or adding machine) that works by moving gear racks and using a stylus included in the kit. You can add and subtract numbers by moving the sliding racks, marked with arrows and numbers from 0 to 9. BUY YOURS TODAY! https://www.adventuretowntoys.com/diy-wooden-calculator-set.html #adventuretowntoys #woodentoy #uniquewoodentoys #woodenlearningtoys #woodencalculator #newmathexamples #arithmeticmath #mathsubtraction | Adventuretown Toy Emporium
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A Mechanical Addiator is a compact arithmetic machine (or adding ma…
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