Cube and Square Root Bones | For Use with Napier's Bones Would you like::Only Cube Root Bone Recommended for ages 10 and

Recommended for ages 10 and up

Great for birthdays

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Cube and Square Root Bones | For Use with Napier's Bones Would you like::Only Cube Root Bone Recommended for ages 10 andMaster classical root extraction with precision crafted wooden bones. This listing offers two variants designed specifically for Napiers method of extracting roots: a Square Root set and a Cube Root set. Choose the variant you need, or add both to complete your toolkit. Each set is made in our Florida workshop and laser engraved for clarity, durability, and classroom reliability. What these sets do Napiers bones use arranged number rods to turn multi