I just acquired a Leitz Focomat V35 colour enlarger. It came with what I think is a colour analyser. The only marking it has says "Wallner SM Color", with no model number or other ID marking. Is anyone familiar with this piece of equipment and would you know where I could find a manual. I have tried unsuccessfully so far to scour the web for a manual, as I do not know how to use this equipment. Thanks. Luanda