Measures grounding connection resistance within 0.01Ω… 4kΩ; Ground potential measurement with 0.1V resolution; Data hold, MAX / MIN function; Auto power off function (in 3 minutes); Measurement time: 2.5 times per sec; Wide range and high precision; All ranges are selected with one switcher; Overload protection system; 3 3/4 digit LCD, max. 3999 LCD; Dimensions: 7.5(L) x 5.5(W) x 3.03(H)in / 190(L) x 140(W) x 77(H)mm; Weight: 28.2 oz / 800 g.