Provided Calibration Source Checker guarantees exact assessment with precision of 0.1ma. Having vast double LCD to show voltage, our source checker finds essential utility in electrical, hardware, car and numerous different businesses. Immediate outcomes can be obtained attributable to its profoundly effective and sensitive equipment. Over-burden indicator is integrated on our Calibration Source Checker surpassing load of 240 ohm. The checker is treasured for strong development and easy to understand interface. In addition, it is control LED by 9 volt battery. Further, our source checker has been composed in consistence with EPA strategy 340.2. The offered calibration source checker has huge double LCD that shows ppm as well as temperature with visual chart simultaneously.