*Measuring range: 1.0~300mm (Steel)

*Accuracy: ±(1%H+0.1) mm

*Resolution: 0.01mm

*Sound velocity range: 1000~9999m/s

*Working frequency: 5MHz

*Minimum limit for tube measuring:

Φ10mm probe: Φ20*3mm (Steel)

Φ6mm probe: Φ12*2mm (Steel)

*Auto calibration to assure the accuracy

*Auto linear compensation: this advanced software program enhances the

 precision by correcting the non-linear accuracy of transducer.

*Data store/ Data recall/ Data delete function

*Sound velocity measurement

*Metric/Imperial unit selection

*Low battery indication

*Auto power off

*LCD backlight display*Warranty: 12months

*Packing Method: Gift box + PP box

*Power supply: 3pcs*1.5V AAA alkaline batteries

*Weight: 210g

*Dimension: 70*145*28mm

For more specification click on below link:

http://www.benetechco.com/en/products/ultrasonic-thickness-gauge-gm130.html