The new CHECK-LINE TI-1071 Intrinsically Safe Ultrasonic Wall
Thickness Gauge accurately measures wall thickness and the extent of corrosion of all metals, ceramics, glass and most rigid plastics - from only one side! 
Limit value guides and monitoring
 Adjustable sensitivity
 Includes protective vinyl pouch with clear plastic window for safe use in rugged environments.
Energy saving mode
 Accuracy ± 0.0019" (0.05 mm)