Assembled puzzle in hand.
Four pieces assemble into an octahedron using coordinate motion. Made from 19 rhombic dodecahedrons. The "child" is the locking piece - a small tetrahedron. The assembled puzzle is 5cm or 2 inches tip to tip.
cm:
11.026 w x
5.062 d x
2.38 h
in:
4.341 w x
1.993 d x
0.937 h
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