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3D3DBrass split ring.
The Boeing aircraft company operates a wonderful surplus store in Kent, Washington (near Seattle). I have no idea why they made, and then had second thoughts about using, this lovely huge, heavy, split ring of brass, but they did, and it ended up in their surplus store. It looks like something you could make a magnet out of, if it were iron instead of brass.
Source: Boeing Surplus Store
Contributor: Theodore Gray
Acquired: 11 August, 2007
Text Updated: 11 August, 2007
Price: $15
Size: 7"
Composition: CuZn