For accuracy, it is die stamped so that precisely equal distances are maintained between pivot points. Two injection moded sliding weights provide for fine adjustment. With a load of 50 grams per pan, the balance has an ultimate sensitivity of 10 mg. Gram Mass Set Standard masses ranging from 100 mg to 50 grams, packaged in plastic box with tweezers. One weight set required for each balance. Grades 7 – 9.