... -1 OIML E1,E2,F1 test weight 3, ASTM class 0,1,2 test weight 4, 1g-500g calibration weight PREMIUM LINECALIBRATON & TESTING EQUIPMENT INSTRUMENT ... , XP26003L ditto 1 1mg Single weight available, from 1mg to 20kg with 2 optional packaging: aluminum box or plastic boxSpecial weight avaiable: test weight