I did a polish a D spring and and polish job on my PT 92 about a year ago I didn't have a trigger gauge at the time but I noticed a difference from before. I got LYMAN TRIGGER PULL GUAGE in last Friday I m playing with it now to get used to it it. Is touchy and will give off different readings if you pull too fast it shows very life pulpit gives I my opinion a more accurate reading slow and steady I've been using my 1911's as test pulls the the 92 would be a good test vehicle.