simpson vom

I have found an old simpson meter and it has no designation on it. I need a schematic for it. The lettering looks to be gold in color and very faded out. I opened it up and saw that it takes 4 aa batteries and one c cell.

Hello Chuck,

It's very difficult if there no model number or type designation is placed on this meter.
My be it will help the following link;
http://www.simpson260.com/downloads/downloads.htm

Regards, Jan