That would mean that if the Hobbs reading indicates a flight of 1.0, the tach would indicate 0.8 of an hour. Given this nugget of knowledge, when the Hobbs failed, we multiplied the tach to get ...

During the mid-'90s, you'd be hard pressed to find a modified Honda without an Auto Meter Sport-Comp Monster tach perched menacingly upon its dashboard. Check out this old school flash back.