Heavy-Duty Black 2" Hourmeter (10,000 hrs) (12 VDC)
Mounting Hole Information:Size 2 - 2" gauge (2.0625" [53 mm] mounting hole)
Black dial with bold white graphics, black aluminum SAE style bezel, contoured white pointer and flat glass lens.
Hourmeter operates by applying battery voltage across the gauges's register motor to ground. The register increments increase when the key switch in on. Route power through a normally open Oil Pressure switch to count "engine running" hours.