The SG80 Series sonic thickness gauges have been specially designed for the automotive industry. The SG80 & SG80BDL are frequently used for measuring the thickness of cylinder walls, intake or exhaust ports, chassis, tubing, body panels, and windscreens. It also has the ability to scan the length of a part to find the minimum thickness. The time-based B-Scan feature of the SG80BDL displays a cross section of the opposite surface, allowing engine builders the ability to see the contour of the back surface in cylinders while scanning. Use the Echo-Echo ThruPaint™ feature of the SG80BDL to measure chassis tubing with or without paint and other coatings.