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Model shown is mahogany
A perfect gift for math lovers
Best to try sober
so they have a nice look and feel to them
Handcrafted Wooden Design - Durable and beautifully made for years of enjoyment
Genaille-Lucas Rulers for Multiplication | STEM Montessori Math Aid scotties tournament Model shown is mahoganyGenaille Lucas Rulers A Hands On Multiplication Tool & Historical Math Aid Master Multiplication Without a Calculator Discover the Genaille Lucas Rulers, a fascinating historical math tool that simplifies multiplication with no need for mental calculations. Designed in 1891 by Henri Genaille as an improvement over Napier's Bones, this set of 11 precision engraved wooden rods allows users to instantly read multiplication results, making it an excellent
