Treasurechic
Well-known member
I don't know if anyone else has already come up with this idea or not but I'll post it anyway. I made a small arrow and taped it to the back of my meter so that it lined up with the white line on the calibration knob, this way should the knob get off-set I can easily re-align it without having to go through the whole process again, I even taped the knob a bit to keep it from moving, this will work on the 180 or 550.