| | |   Sphere. Described as a beryllium gyroscope sphere from a military aircraft.  It's definitely not one of the classic light-weight gyroscope spheres: It appears to be solid, though of course still very light. No idea what it was really used for.
 Source: eBay seller ohioidustrialsurplus
 Contributor: Theodore Gray
 Acquired: 10 January, 2006
 Text Updated: 20 February, 2006
 Price: $66
 Size: 1.25"
 Purity: 99%
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