This current transformer test instrument is precision-made and built to stand up to the harsh environments of field testing. Any CT-T1 bought domestically, and at list price, will receive a 15% off 20th Anniversary Special Price. Plus, every new instrument sold this year also comes with 5 FREE certifications (1 per year, excluding shipping). This offer is only good for P.O.’s received between December 1st and 31st, 2017. Call 888 484 3779 to order your CT-T1 while supplies last!