1.Oil, water and dust proof 2. Knob make operation easily 3. Hi-resolution multi-color TFT LCD 4. 10 hours working time Application:The instrument can be widely used in locating and sizing hidden cracks, voids, disbands, and similar discontinuities in welds, forgings, billets, axles, shafts, tanks and pressure vessels, turbines, and structural components.KEY FEATURES:The instrument extends the ...