1 Ultrasonic Thickness Gauge. 20 3.0mm(steel). - Sound Velocity Range: 1000-9999m/s. - Model: GM100. - Size: Approx. 15 8 3.2cm / 5.9 3.2 1.3in. - 1 4mm Sample Block. - 1 Dia.10 Transducer(5KHz).
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