Understanding Distance Measurement in Vehicles

The question asks about the device used to measure the distance traveled by a vehicle by attaching it to the wheel. Let's look at the options provided to identify the correct device.

Analyzing the Options for Distance Measurement

• Pedometer: This device is primarily used to measure the number of steps a person takes while walking or running. It is worn by a person and not attached to a vehicle's wheel.
• Odometer: This device is specifically designed to measure the distance traveled by a vehicle, such as a car, bicycle, or motorcycle. It is typically connected to the wheel or transmission system to record the total distance covered. This fits the description in the question.
• Passometer: Similar to a pedometer, a passometer counts steps taken by a person. It usually works based on detecting hip movement and doesn't involve attachment to a wheel.
• Perambulator: In its modern usage, a perambulator refers to a baby carriage or stroller. Historically, it could also refer to a measuring wheel device, but the term "odometer" is the standard term for the device attached to a vehicle's wheel for measuring distance.

Identifying the Correct Device for Vehicle Distance

Based on the definitions, the device that measures the distance by being attached to a vehicle's wheel is the odometer.