... 3.arround 1kg 4.high quality A micro-computer tachometer,marine tachometer,Rectangular Computer tachometer,diesel engine tachometer designed to be used ... performances and convenient use.Its main technical data include: 1. Input voltage: 8 ~ 32V 2. RPM: 0 ~ 5000 3. Display: high ... , time and time record) Marine Tachometer,Diesel Engine gauges,Rectangular Computer tachometer