Specification:Thickness measurement range:0.65 ~ 500mm (steel)0.3 ~ 200mm (glass)3 ~ 50mm (cast iron)4 ~ 80mm (high temperature)Note: the range of thickness measurement for different materials is determined by the performance of the probe, the surface condition of the material and the ambient temperature of the measurement.Sound velocity of material: 509 ~ 18699m/sMeasurement accuracy: (0.5%H+0.05) mmDisplay precision: 0.01mm or 0.001inchReceived bandwidth: 1MHz to 10MHz (-3dB)The lower limit of tube measurement: (depending on the configuration of the probe)15mm x 1.0mm (probe: 7.5MHz, 7.5MHz, 6mm)10mm x 1.2mm (probe: 7.5MHz, 7.5MHz, 6mm)Measurement frequency: 2~20 times / second (can be set)Power: 3VDC (two AA alkaline batteries)Screen display: 128 * 64 dot matrix LCDWorking hours: 280 hours (automatic mode)100 hours (backlight opens)Applicable temperature: -10 C ~ 50 C (room temperature measurement environment)-10 C ~ 300 C (high temperature measurement environment)Working humidity: 20% ~ 90%RHInstrument size: 136 (L) mm x 72 (W) mm x 20 (H) mmInstrument weight: 176g (Not including battery)Self test block thickness: 3mmStandard accessories:SW6 product standard configurationone piece of SW6 thickness gaugemarking probe 1 (5MHz, 10mm)user operation manualOne piece of plastic sealed packing box (size 18cm X 15cm X10cm)USB data lineCD-ROM CD-ROM