GM130 Digital Ultrasonic Thickness Gauge Depth Gauge Sound Velocity Meter Measuring Range 1.00~300mm With LCD Backligh

Features & Functions: 1. Auto calibration to assure the accuracy. 2. Auto linear compensation: this advanced software program enhances the precision by correcting the non-linear accuracy of transducer. 3. Make a quick adjustment for the sound velocity / thickness, and a quick recall to the stored data 4. Coupling status indication: Observing the coupling icon to learn if the coupling is accomplished or not. 5. 12 thickness measurement storage and recall function available, which facilitates the height work or working in wild area. 6. Sound velocity measurement. 7. 12 sound velocity for different material which is also adjustable . 8. Thickness alarm setup. 9. LCD backlight display. 10. Low battery indication and auto power off. 11. Metric/imperial selection. Specifications: Measuring Range: 1.00~300mm(steel) Accuracy: ±(1%H+0.1)mm, H denotes the measured thickness. Working frequency: 5MHz Resolution: 0.01mm(1.00 to 99.99mm); 0.1mm(100 to 300mm) Mininum limit for tube measuring(steel): ?15 * 2.0mm(?6mm transducer), ?20 * 3.0mm(?10mm transducer) Sound velocity Range: 1000~9999m/s, When the given thickness is under 20mm, the accuracy is ±1mm/H * 100%; when the given thickness is over 20mm, the accuracy is: ±5% General Characteristics: Operation temperature/humidity: 0 to 40°C, ?90%RH Power supply: 3*1.5V AAA alkaline batteries (not included) Item Size: 15 * 8 * 3cm/ 6 * 3 * 1.2in Item Weight: 243g / 8.81oz Package Size: 25.5 * 17.5 * 5cm / 10 * 6.8 * 2.0in Package Weight: 495g / 1.1lb Package List: 1 * Thickness Gauge 1 * ?6 Transducer 1 * ?10 Transducer 1 * 4mm Sampling Block 1 * English Manual