automatic digital cable length meter super high-accuracy wire length and resistance ohm tester up to 30km all sun em5812

this meter can be used to measure spooled wire (or cable). after connect the meter to the two ends of the wire to be measured, the display will indicate the length of the wire quickly. in normal measurement mode, the meter can measure 20 kinds of copper or aluminum wires. in user select mode, user can save up to 8 parameters for 8 wire samples