Mfr # NPTC-SH01-3O. The quartz hour meter is specially designed for standard industrial timing and supplying data for the reference of maintenance duration for precision equipment. Featuring a waterproof design and steady performance, the hour meter gauge is widely used for tracking engine hours. This hour meter will allow you to keep track of engine hours so you can monitor service intervals. You can mount this hour meter right on your dash or in an inconspicuous space. Round Quartz Hour Meter for Boats, CAT Fork Lifts, John Deere Tractors, Wood Chippers, Shredders, Pumps, Generators, Motorcycles, ATV, Go Carts, Jet Ski, Snowmobiles, Lawn Tractors, and More. Features Waterproof and Easy To Read Hour Meter Keep Track of Engine Hours so you can Monitor Service Intervals Set Include The hour meter fits in to a 2 in. round hole and includes an adjustable retrainer clip so that the meter can be mounted on material up to 9/32 inch thick. Meter depth behind the panel is 1.7 in. Package Includes 1x Round Hour Meter Specifications Color: Black Waterproof Rating: IP65 Depth Behind Panel: 1.7 Inch Outside Diameter: 2.3 in. Power Consumption: 0.3 watt Operating Range: 6 to 80 Volts DC input Temperature Range: Minus 10C to Plus 50C Accuracy: 0.01, Quartz Display Range: 0-99999.9 hours Weight: 1 lbs