Looking for schematic and info on use.
2-terminal input/output
no range selector switch but has a bank of lamps to
show voltage or decible levels
No model number

Tom,

You might try posting your request to the Knight-Kit forum at http://pluto.beseen.com/boardroom/t/18370/
Although it isn't ferocious with activity, it is frequented by folks who have or work a lot with Knight-Kits.

Dean