It is also popular as a pocket scale for antique dealers, since it will read in troy ounces as well as grams and Imperial ounces, a nice feature if you buy jewellery. (In fact, it will read in pennyweights as well, a measure still used in Britain.)
The best feature for cooks is the ability to set it for tare weights, eliminating the container weight from the measurement. At 3" x 4" and 3/4" thick, the scale takes up little space in a kitchen drawer.