Precision Multimeter 6 1/2 bit 1 setProcess Signal Calibrator 4~20mA 1 setStandard Thermal Couple and Thermal Resistor higher accuracy than the field instruments One for eachResistance Box Class 0.02 1 setDigital Thermometer ( Mercury Thermometer) higher accuracy than the field instruments 1 setThermometer-hygrometer higher accuracy than the field instruments 1 setInsulation Resistance Tester 0-1000V(0V、100V、500V、1000V Optional) 1 set