בידספיריט | A 20th Century 'Rolling Ball'

A 20th Century 'Rolling Ball' Clock - A 20th Century 'Rolling Ball' Clock   A three ball example mounted with an International Time Recording Co. mechanical clock and running of a 1rpm electric motor with a lightbulb mounted in the back,  constructed in aluminum, plexiglass, brass, and composite materials, the clock with two plastic and one steel ball.    Dimensions:  the case measures 13 x 20 x 10in  Condition: Good, some signs of age and wear, we do not guarantee the functionality, time keeping, or safety of any electrical components.