ITEM NAME:Mechanical Hour Meter Gauge Professional Engine Hourmeter AC110-250V for Boat Description: This round hour meter can be used for tracking time on machinery where time is used to determine service intervals based on hours operated. Power voltage: DC 9-80V.Indicator range: 0-99999.9 Hours HM-3 series products are suitable for use in home, industrial, air.Indicator range: 0-99999.9 Hours. Zero reset device: no reset zero. Panel size: 36×24.