@tzh21y ,
In my house too, the Technics gauge ends up being about 1/8" different in end place mounting of the stylus versus my Feickert protractor and GeoDisc.
But, I’m not expert, and I think Technics does have some reasoning for this--that it’s not a mistake. Well, that’s my assumption as Technics is clearly nuts about tolerances, fit and finish, and objectives.
I like the sound of both. My AT ART9 cartridge tracks impeccably using either setup tool.