Final answer:
A hubodometer is an instrument used to track the distance traveled by a vehicle, specifically trailer wheels. It functions like an odometer, but it is attached to the hub of a wheel.
Step-by-step explanation:
A hubodometer is an instrument used to keep track of the distance traveled by a vehicle, often specifically used for tracking the distance traveled by trailer wheels. It functions like an odometer, but it is specifically designed to be attached to the hub of a wheel. It has a mechanical mechanism that rotates as the wheel turns, keeping track of the distance.