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depends on where you put the water tower piece
no pressed wood) with wood cover makes for an especially nice package
The resulting letter or number on the other gear(s) could be the answer
Solid Wood Craftsmanship
handmade from blue-stained maple hardwood with five different snowflakes laser-engraved into the lid and sides
Napier's Bones | Handmade Wooden Math STEM Teaching Aid Add-ons:Cube Root Bone depends on where you putNapier's Bones is a handcrafted wooden reproduction of the multiplication aid invented by John Napier in 1617. Before calculators, students and tradespeople used the marked rods to multiply, divide, and find roots. The base set ships with two complete sets of rods (0 9), a storage base, a wood cover, and printed instructions with worked examples. Optional square root or cube root bone add ons at checkout. Includes: storage base, 2 sets of rods 0 9,
