A postage scale (1) and method of operation. The scale has two or more modes (M.sub.1, M.sub.2, M.sub.3) of operation. In a first mode the scale outputs the weight of an item to within a first, coarse increment. In a second mode (M.sub.2), the scale outputs the weight of an item to within a second, fine...http://www.google.es/patents/US5174398?utm_source=gb-gplus-sharePatente US5174398 - Multimode postage scale
