|Maybe a training cobalt-60 source.|
This item was sold as a training simulator of a technetium generator. It isn't. There is such a thing as a technetium generator, but they don't look anything like this. Instead, it's possible that it is a training simulator of a cobalt-60 gamma ray source or thermoelectric battery core. But that's just guessing: The only thing I can say for sure is that neither the core nor the shield are made of anything but ordinary steel, and they are totally non-radioactive. Any ideas, let me know.
Source: eBay seller aztecjaguarwarrior
Contributor: Theodore Gray
Acquired: 20 August, 2003
Text Updated: 11 March, 2007
Sample Group: Medical