Toe-In Alignment Gauges
Toe is the difference between the distance from the front of one tire to the other, and the rear of one tire to the other. If the front of the tire is closer to the centerline than the rear, the wheel has toe-in. If the front is farther out than the rear, that wheel has toe-out. For the most accurate alignment, choose a toe gauge that can measure individual toe on each wheel (relative to the vehicle centerline) and not just total toe.