Three parts, a- c. a. Metal housing painted black rests on two black metal feet. On the back of the housing there is a metal crank with a wooden handle (both painted black) that - when turned - spins the two metal test tubes. Extending from the top of the housing is a neck (approximately 12 cm long). Extending from the neck is a bronze apparatus that holds two test tubes and spins when the handle is turned. b, c. Two aluminum protecting shields - both 12 cm long- with a diameter of 2 cm. They both have a rim on the top. The side of the rim is etched like the edge of a quarter. Color: BK,SL,BZ
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