The SPC Toe Bar With Scribe gives toe readings (in 1/32 of an inch ­increments) by measuring distances between marks scribed at the center of the tire treads. Making sure the alignment on your vehicle is correct leads to better wear patterns on your tires, even heat cycling, and better traction. Comes with 8 ft. bar, 11 in. pointers, 5 in. stands, and scribe.