Marble Machine 8x6x5" No.5
This marble machine has 16 mm colorful glass marbles which can be chosen. The helical lift raises the balls on two sides. There are two separate tracks with three flat spirals and many twists and turns. It's made from copper, wires are joined with soldering. The speed is adjustable.
Full size with acrylic cover box: 200x160x130 mm.