The Mini-EWG integrates the controller, keypad, sensor, and LCD screen into a single unit, weighing less while offering greater maneuverability, versatility, and improved operability. A user-friendly menu displays simple easy-to-follow instructions. IEM’s rugged design allows for the tough environment and climatic conditions in which the Mini-EWG needs to endure, as well as insuring that no measurements are taken until it is properly placed on the wheel. The Mini-EWG provides consistently accurate readings of up to ±0.015625 an inch. Wireless transmission of the stored data improves overall efficiency, eliminates errors, and reduces unnecessary costs.