1. Features -Free conversion between metric and imperial -Automatic calibration of zero point: automatically correct the system errors -Automatic non-linear compensation: computer software is used to correct the non- linear errors ofthe probe for the purpose of improving the accuracy -The upward and downward adjustment keys enableprompt selection of sound velocity, thickness, andcheck the thickness memory units -Prompt indication for coupling state -Sound velocity can be measured according to the testblock's thickness -Ten thickness values can be stored without loss afterturn-off -Sound velocity of five different materials can be storeddirectly needless to search in the conversion table. -Low voltage indication and automatic turn-off -Oil proof protection for longer service life
2. Specification Measuring range: 1.2~225.0mm Display type: 4-digit LCD Minimum display unit: 0.1mm Sound velocity range: 1000m/s~9999m/s Measuring error: +-(1%H+0.1) mm, H is the actualthickness of the object to be measured Power supply: two AAA alkaline cells 1.5V Power consumption: working current is smaller than 20mA(3V)