The Honeywell 85134-02 Quartz Plus dc Hour Meter is a robust and reliable device designed for a variety of industrial applications. It utilizes a custom CMOS integrated circuit to accurately measure and display operating time in hours and tenths, with a clear running indicator. The meter is sealed for environmental protection and supports a broad range of battery system voltages, making it suitable for diverse equipment such as lawn tractors, farm equipment, construction machinery, and recreational vehicles. Its three-screw flange mounting and black bezel provide secure and aesthetically pleasing integration into various systems.