The Ratioparts 1935 Tiny-Tach is a versatile digital hour meter and tachometer designed for petrol engines. It accurately records engine operating hours, helping users track maintenance intervals, and displays real-time engine revolutions per minute (RPM). This compact device is easy to install, requiring only a connection to the spark plug cable, and is suitable for a wide range of equipment including lawnmowers, chainsaws, generators, and other small engines. It features a clear LCD display and is battery-powered, ensuring reliable performance without external power. The unit is sealed to be waterproof and shock-resistant, making it durable for outdoor and demanding environments.