Champ Calibrated Tram and Tracking Gauge Precision tram instrument calibrated in both US and Metric scales Two 6 foot sections join together for a total of 12 feet. Much more stable than other trams in three sections! Comes with 3 pointer slides, 2 long and 3 short pointers. Also includes 3 centering cones for large control holes. Each pointer has 1 pointed end and one recessed end for easy inside measurement of control holes. Perfect for doing 2-point and 3-point wheel tracking checks. Also do wheelbase checks quickly and easily.