This record contains two parts from a single channel tube. They are circular metal pieces with ceramic pieces attached. In each, there is a hole in the middle. There are pins and little metal pieces on the edges. One of the objects has a longer metal piece coming from it. The other has some coiled wires with pins on the ends. The other side of the objects have reflective pieces in an indented space. Both have some pencil markings on the ceramic piece.
