Scaleauto SC-5043 - Tech Tool for Measuring Under-Car Clearance

Not cheap, but if you tech a lot of cars it really comes in handy. Stepped design gives you quick and easy checking for clearances of 1.0, 1.3, 1.5, 2.0, 2.2, 3.0, and 5.0mm. Removable handle for compact storage in your race box.