1.Hour gauge, 2.Hour meter, 3.hour guage, 4.hour counter, 5.VDO gauge, Hour Counter GaugeHour gauge,Hour meter,hour guage,hour counter,electrical voltmeter gaugeclamping force gaugeVD1.Rugged ... ideal for O.E.M and fleet applications.2.Mechanical hour meter with superior accuracy.3.Standard working rangers 6-80v.4 ...