Ideal for any small office. Easy-to-read, color-coded dial identifies USPS rates for First Class, Priority Mail and Expres Mail. Quickly compare rates and avoid overpaying or underpaying postage on large letters and small packages without a trip to the Post Office. Dial is replaceable when postal rates change. Wide base provides stability for large letters. Intended for private use only; not legal for trade. Scale Type: Postal; For Carriers: USPS; Electronic/Mechanical: Mechanical; Increments: 1/2 oz.