Marble Machine 8x6x5″ No.1
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It’s made from copper, wires are soldered together. Has 3 tracks with features like flat spiral, zigzag, loop with a track trough, horizontal spiral and a helical lift mechanism. It is made on a natural-looking beech wood base. The electrical components are engraved at the bottom. The speed is adjustable.
The machine is covered and protected by an acrylic box.
Size 200x160x130 mm. Approximate: 8x6x5 inches.
It has 10 mm steel balls.