The AWS Series is a great durable and compact pocket scale for those who are seeking the on the go high-tech portable scale. The backlit LCD display helps make the numbers viewable and easy to read. The intuitive protective cover provides protection for the scale. With the smooth stainless steel weighing surface clean up is easy. Push buttons on the scale give you full control such as: switching modes grams, ounces, troy ounces, pennyweights and tarring. This checkbook size scale offers great range from 100 grams to as little as 0.01 of a gram. All scales backed by our 10 year warranty. Not Calibrated.