Included Angle is the combination of SAI and camber. Viewed from the front, the included angle is SAI plus camber if the camber is positive. If the camber is negative the included angle is SAI minus camber. If a side to side variation greater than ± 1.5° exists, check for vehicle damage. Angle + Camber = Included Angle (IA)
Sum of the kingpin or ball-joint inclination angle and the camber angle of a vehicle's front wheel. The sum of the camber angle added to the steering axis-inclination angle. The angle included between the outer surfaces of the link-plate contours of a silent chain that meshes with the sprocket tooth form.