Colorstar 2000 Operation

[Nige]

I picked up a Colorstar 2000 analyser with a enlarger purchase but as always, no manual came with it. I think I've worked out roughly how to use it, but the finer points of calibration and contrast measurements (only using it for B&W) elude me. Anyone got a manual they could scan/photocopy and send me, or give me some hints of what I should be doing. Googling hasn't turned up anything useful.

Cheers, Nige