Cube and Square Root Bones | For Use with Napier's Bones Would you like::Only Cube Root Bone Engrave a name or message

Engrave a name or message on the base (up to 45 characters)

No visible lid or obvious solution

Great for birthdays

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You **cannot place a larger disk on top of a smaller disk**

Cube and Square Root Bones | For Use with Napier's Bones Would you like::Only Cube Root Bone Engrave a name or messageMaster 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