The Amprobe CR50A is a digital hand held component tester for measuring capacitance in nine ranges (200pF, 2nF, 20nF, 200nF, 2fF, 20fF, 200fF, 2mF, 20mF) with a basic accuracy of 0.5% and a resolution down to 0.1pF. To assure optimum accuracy, an external "zero" pot adjusts out stray capacitance from the test leads in the 200pF range. For measuring resistance there are seven ranges (20, 200, 2K, 20K, 200K, 2M, 20M) with a basic accuracy of 0.5% and a resolution down to 0.01. The "low ohms" 20 range also features its own "zero" pot to adjust out lead resistance. The CR50A also includes a diode test and continuity beeper. Operates on 9V battery (included), measures 6.1" x 2.8" x 1.3" and weighs 6 oz. Comes complete with manual, test leads with screw-on alligator clips, holster and a 1-year warranty.