1PC NEW TM8811 Ultrasonic Glass Thickness Meter Gauge 1.2~200MM it

4 Digit, 10 mm LCD. Sound Velocity. 4 x 1.5 V AA (UM-3) Battery. Temperature: 0~40 °C, Humidity: < 85 %RH. ± (0.5%n + 0.2).

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