Cube and Square Root Bones | For Use with Napier's Bones Would you like::Only Square Root Bone The puzzle is based on

The puzzle is based on the recently discovered "Einstein" tile concept

It is a natural gift for the UFO watcher and the collector of the strange

The rings are solid maple and cherry

9" x 9" - Great for larger layouts

or custom engraving on the frame or cover

Cube and Square Root Bones | For Use with Napier's Bones Would you like::Only Square Root Bone The puzzle is based onMaster 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