... 9999 RPM 3.diesel engine meter Digital Tachometer for monitor the speed of marine diesel engine. Every boat need to install one PC, ... 4. 15 meters cable2. Packing Each item in Carton BoxOther types of diesel engine gauges;*Temperator of water monitor *Temperator of ... (RPM, oil pressure, oil temperature and water temperature) 5.seven-in-one(RPM, oil pressure, oil temperture, water temperature, voltage, ...