-5 function button: On/Off, inch/mm/Fraction, Zero reset, Incremental/Absolute, Set -Fractional reading in 64th increment -Zero point can be set anywhere along the full travel for comparing measurement -No rack, pinion, or glass scale. Linear scale is safely embedded in the light weight aluminum scale body -Features auto turn-off if sit idle to save battery power; when turn on the caliper at the same measurement coordinate (without changing the travel of the caliper) it will remember the numeric value of this coordinates before it auto turn-off - Micro USB connection port between the scale and the digital readout -One end of wire is welded to electronic ruler, the other end is connected with a Micro USB cable connector and monitor -Digital signal input terminal is a Micro USB interface, more reliable than the original SPC interface