Classically Trained Slide Rule Mechanical Analog Calculator Long Sleeve T-Shirt

$21.99
by Slide Rule Mechanical Analog Calculator By Zynx
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Slide Rule Calculator design. Classically Trained Slide Rule Mechanical Analog Calculator is perfect for the math teacher or college professor that learned how to use this ancient piece of history! Perfect for the retired engineer, math teacher, scientist, college professor from the boomer & silent generations! Lightweight, Classic fit, Double-needle sleeve and bottom hem

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