Aluminum reflector with metal cage to protect bulb. These were popular for a while, especially with the really wide relectors on test tube lights, and meant to keep the diver from breaking the test tube on a rock or something.
Aluminum reflector with metal cage to protect bulb. These were popular for a while, especially with the really wide relectors on test tube lights, and meant to keep the diver from breaking the test tube on a rock or something.
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