Lang Tools TU-16A Quick Change Automatic Transmission to Engine Oil Pressure Tester Checks engine oil pressure and automatic transmission pressure on domestic and foreign cars, trucks, motorcycles, etc. 21 color- coded standard and metric fittings 2-1/2" gauge has a dual scale dial with ranges from 0-100 PSI and 0-28 bar 3-1/2" gauge has a dual scale dial with ranges from 0-400 PSI and 0-28 bar