This model consistw of six pieces of wire, each bent at the center into a ninety degree angle. The edges of the wires are held together in pairs, with all the bends meeting at the center. All the wires have tan string wound them. . One leg of each wire also is wound with gold string. The trihedral angle bounded by the plain string sides is the supplement of the trihedral angle bounded by the sides with gold thread as well.
Compare MA.304723.135 and MA.304723.136.
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