Recently acquired one of these interesting devices, and I've got a couple of questions:

First, does anyone have a manual for this thing that they'd be willing to send me a scan of?

Beyond that, operationally, I want to know what the dial on the base is for, what the 5 filters in the little slide carriage are for (red, green, and blue are easy enough, but there's also a second blue filter and what seems to be a neutral density filter as well that I can't figure out), and what the purpose of the lever on the underside of the head is for. It moves a little white filter in and out of the path of the lightbulb on the underside of the head, but I don't know why I'd ever want to use it.

Answers anyone?