earth ground tester 3 pole fall of potential

{"cid":"91202321","title":"Fluke 1625-2 kit Earth Ground Tester Kit","imgUrl":"https:\/\/img.chinax.com\/nimg\/40\/1d\/572c172ace7b2c47af6abcd1d1fb-200x200-1.jpg","attrs":{"Price":"USD$3270\/PC","Brand Name":"Fluke","Model Number":"1625-2 KIT","Minimum Order Quantity":"1","Delivery Time":"3 work days","Certification":"CCC,CE","Place of Origin":"USA","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"10","Packaging Details":"carton","Operating temperature":"-10\u00b0C to 50\u00b0C","Storage temperature":"-30\u00b0C to 60\u00b0C","Temperature coefficient":"\u00b10.1% of reading\/\u00b0C < 18\u00b0C > 28\u00b0C","Measuring range":"1 V to 50 V","Display range":"0.0 V to 50 V","Weight":"5kg"}}