This is the digital scale used by professional jewelers to weigh gold and other solid precious metals. The scale measures in pennyweight (dwt) and troy weight (ozt)--the units of mass preferred by jewelers to determine the precise weight and value of precious metals. The scale also measures in ounces and grams and is accurate to 0.1 g. It calibrates with a touch of a button and has a tare function and a 600 g capacity. With a 3" x 4" stainless steel weighing platform, backlit LCD, removable weighing tray, and storage pouch. Includes two CR2032 batteries. 6" L x 3 1/4" W x 1/2" H. (4 oz.)