Mo-Clamp 7050 Baby Tram Gauge w/Case. Measures from 2-1/2" to 7'. Mo-Clamp's Tram Instruments are indispensible for determining collision damage to unibody cars and for checking critical measurements during repair. Use the tram to check dimensions between control points on suspension and mechanical components. The Tram Instrument makes it easy to establish dimensions around components and to check contours by comparing measurements from one side of the vehicle to the other. Level bubble installed in sliding head for accuracy in measurement.