I recently bought a soligor Spotmeter II on ebay, the light meter was over exposing by 3 stops. I notice that the needle is not in the zero position (ie aligned with the '. 2') but is below that by 3 stops. How can I recalibrate the spot meter ? There is a silver screw near the trigger on the grip but turning that does not bring the needle back to zero position but instead messed up the sensitivity of the meter I think. At the bottom of the handle I see a thread for a larger screw but no screw in place. Am I missing a part that does the alignment of the needle ? how can I fix my "broken" light meter. Currently I am working around this by setting the ISO to 400 (I shoot 100 ISO film).
Thanks a bunch