The label on the scope marks it as a Vanex. I believe they were imported by an optician in Perth WA and rebadged. Here's a pic of the (rather agricultural) drive made for it 10 or 12 years ago. Its a stepper motor from an old computer disk drive, the ones that were about the size of a brick and weighed as much, grafted to a reduction gearbox salvaged from an old photocopier and drives the mount through a rubber tyred/knurled setup. The controller is a variable pulse 555 timer feeding into a 4017 decade counter and pulsing the stepper through small switching transistors. Worked reasonably well but some slippage on the rubber tyre. Might look out for a couple of gears to replace it now that I've dug it out of the box.
