... temperature gauges 3.water temperature gauges 4.tachometer RPM 6 in 1 Diesel Engine meter, Comprehensive Tester for ships1.oil ... : 400MA4.Size: 223mmWx153mmHx90mmthickness5.Weight: 3 KGWe also supply other type Diesel Engine Tester, Tachometer, GPS Antenna, interphone and other ... and water temperature)3.four-in-one(RPM, oil pressure, oil temperature and water temperature) 6 in 1 Diesel Engine monitor, ...