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Designed to operate on gas engines. Displays up to 19,999 RPM. Shows RPM when engine is running; displays total hours when engine is not running.
Combined hour meter and tachometer. Digital reading updates every 1/2-second. Fits single and twin cylinder engines. Displays up to 19,999 RPM. Works on Briggs and Stratton, Kohler, Tecumseh, Honda, Kawasaki, Robin, and other engines. Simply attach wire to spark plug. Shows RPM when engine is running; displays total hours when engine is not running.