The question can be answered in many ways.
Without knowing the specifics of the question, this is the best answer that can be given at this time.
A hubmeter.
I would use a odometer or a trundle wheel
trundle wheel
Surveyor's Wheel
it measures the length or distance
36 pi
You can use this tool called a trundle wheel. It's a wheel attached to a stick and after you walk a few steps, it tells you how much did you walk. Like if you wanted to find the distance from a dog to a cat you ue the trundle wheel and walk from the dog to the cat while the wheel rolls along the floor at all times and when you stop, the trundle wheel tells you approximately how far did you walk.
oil
wheel diameter times pi times number of rotations
They measured the distance the wheel traveled on the ground which would be the same as the circumference of the wheel. If they then measured the diameter of the wheel and divided the circumference by the diameter they would have a value for pi.
it has sensors either on the wheel hub or in the transmission to check for distance traveled while in drive
A measuring wheel, string or measuring tape. A laser is also used to measure distances to as far away as the moon.