Escali's newly designed, hand-held, ultra-sensitive mini scale, the PR-500. The PR-500 is a 4.5 x 3.75 x 1 inch scale that measures up to 500 grams. This is an extra-sensitive capacity normally only found in larger, more expensive scientific scales. A great multifunctional scale for use at home, restaurant, laboratory, office, food portioning control, postage or hobby use.