4keys Digital caliper 0-150mm 6inch ABS function electronic vernier caliper micrometer gauge

Features
     High precision
     With power on/off， real power-off，
Leaveit aside still for 20 minutes and it\'ll be power off automatically.
Have a low Consumption of battery.
(A SR44\'s battery life is about 2years when used normally)
     Quick display of the measured value
     With big LCD display
     High cost performance
     Type A is with data output， and a thump roller is optional
     
     FUNCTION:
     Zero-setting at any position for incremental measurement 
     mm/inch conversion at any position
     ABS Function
     Absolute and incremental measurement mode switching 
     Hold Function
     Can hold measuring data 
     Fast tracing Max/Min data
     TOL Function
     Can judge if the work piece\'s size is within the tolerance preset in the caliper