Heathkit QM1 Q meter

I picked this meter up the other day. It came from a school lab and appears to have been taken care of. It also has the original external factory supplied calibration coil as well. I have been able to find only limited information on this unit, such as an unreadable schematic and only about four pages from the manual. I would like to try experimenting with this thing so I was wondering if anyone might have a manual for this model that they would be willing to share or perhaps know of a link where I might find one? Thanks, Lenny