This apparatus demonstrates both DC and AC current generation!  Includes a hand-cranked magneto generator, a light bulb and receptacle and two terminals for connecting test equipment in the circuit.  All components are mounted on a laminated board.  Explanation of the use of the slip-rings for AC and split-ring for DC is included.  Dimensions:  5.5" x 9" x 13".  Click below image to view close-up views.