1. Convenient Bring 2. Good Quality 3. Best After Sell Service 4. Large LCD screen Main ... the thickness of metal (steel, cast iron, aluminum, copper etc) plastic, ceramics, glass, and glass fiber etc.Can be equipped with ... L77LZ2Coupling√√√√√√√Battery(AAA tow)√√√√√√√Random date√√√√√√√Instrument Box√√√√√√√ Model LDT10 Ultrasonic Thickness Tester