19 products
19 products
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Kub-Oloid

This model explains the relationship between the cube inversion and the origi...
$78
Metal Oloid__product

Metal Oloid

Paul Schatz's jewel of mathematics rendered in various heavy metals.
From $295
Educated Monkey Calculator__product
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Educated Monkey Calculator

A classic American tin toy inspired by a real-life performing chimp named Consul.
$32