Adjusting a needle voltage meter to read correctly

[landonshaw]

Thank you for the commments. First there is not an adjusting screw on the front. Originally I was going to replace the meter with a digital, expensive enough to be accurte, or at least as accourate as I need. But... my wife likes how it matches all of the other gauges on the wall, down to th elettering on the face of the meter. So I am looking at how to adjust the gauge.

I will beginwith trying to pry off the face. But not break it. Then if unsuccessful, buy a resistor and add to th esystem.