... concentration of HC,CO,CO2,O2,NOx SV-5Q automobile exhaust gas analyzerFunctional feature:In accordance with non-light-disguising infrared ... to calculate excess air coefficient λ. The analyzer introduces advanced foreign technology. It is composed of complete imported machinery cores, boasts ... oil staff gauge; blocking with rubber plug to plug up engine oil from ejecting: length of lead: 5m.Rated rpm: ...