MG Marposs 9mm GO NO-GO Plug Gauge PI-012 P-0.010 NP+0.040 20 Degree C MG Marposs 9mm GO NO-GO Plug Gauge. PI-012 P-0.010 NP+0.040 20 Degree C. We are not a giant corporate entity. We will make every attempt possible to resolve the issue if we made a mistake, (It happens). byJuly 4, 2026