When I was only a few years old, my father had bought a toy that was Spirograph-like and projected images onto a screen or if I remember right, the wall.

The toy operated by placing two glass disks into separate slots in the top, and would spin them at variable rates controlled by two levers. It projected light through these disks onto a screen. By adjusting the speeds you could hit different harmonics causing the patterns to shift.

I remember it vividly--it was so cool.

But I cannot remember who made it or what it was called.

I want to say that it was manufactured by Ohio Arts and was called Electronic Spirograph, but am probably _way-off_ base here.

I've been scouring the internet off and on for years, and been looking to identify and perhaps purchase a working version even longer.

Thanks in advance