New Digital Scale Jewelry Findings Pocket Weight Tool 300g. This is a new Jennings digital scale. It weighs in grams, ounces & pennyweight. This scale has an advanced parts counting function with multiple sample size. It has a maximum capacity of 300 grams. Protective flip-up cover with magnet clasp and includes a leather style pouch. Powered by 2 AA batteries (included). Unique hand formed patented design.