What tool is commonly used to measure wheel bearing play?

The tool commonly used to measure wheel bearing play is a dial indicator. This precision instrument is specifically designed to measure small movements with high accuracy. When checking wheel bearing play, the dial indicator is attached in a manner that allows it to measure the amount of axial movement in the wheel hub. The readings taken from the dial indicator indicate any excessive play in the bearings, which can affect vehicle handling and safety.

In the context of the other tools mentioned, a torque wrench is used to apply a specific amount of torque to fasteners, which is not applicable for measuring play. A caliper is designed for measuring distances or dimensions rather than the specific play in a bearing. A multimeter is an electrical testing tool used to measure voltage, current, and resistance, unrelated to mechanical play in wheel bearings. Therefore, the dial indicator is the most suitable choice for this particular measurement task.