Scanning Area Covered in One Shot – 20x20 through 300x300 cm (8x8 through 120x120 in) Minimal Scan Index – 0.25 mm (0.01 in) Minimal Resolved Probe Swiveling Angle – 0.5° Ambient Noise Immunity – 60 dB Wind Immunity Compact and Light Weight Simplest setup Wide Temperature Range Airborne Ultrasound Velocity Temperature Correction Principles of Airborne Ultrasound Location: signals of the emitter 1 of airborne ultrasound fitted onto the top of the probe are captured by the receivers 2, which may be placed either on the object under test 3 or close to the object under test 3