Round Hour Meter Gauge John Deere Tractor 420 170 6210 Loader 110 5410 3038 4500 Brand new, high quality 2" Analog Hourmeter. Easy to install, just 2 wires. Works on all John Deere vehicles operates on any input voltages from 6 to 80 Volts DC. The Hourmeter has a 6 digit display and operates on any input voltages from 6 to 80 Volts DC. Fits 2" Round cut out, 2.25" outside diameter. Low power consumption. Completely sealed, dust-proof and damp-proof. Counter never loses. Indicating range: 99999.9 hours. Power consumption: 0.03W. Accuracy: 0.02%. Mechanical vibration: work well under vibration of 18gs,1075Hz