united states postal scales ps100 10-pound electronic postal scale
the united states postal scales ps100 is a 10-pound digital electronic postal scale that weighs items between 0 to 10 pounds and displays the weight to .1 pounds so the mail is not returned for insufficient postage . weight is displayed on a 7 segment lcd . to achieve its .1 - pound . accuracy the ps100 uses its automatic calibration feature . the tare feature is used to set the weight of a container for small items to zero so when the items are weighed only the items weight are shown . a mechanical overload protector prevents damage to the scale when weighing items over 10 pounds . the weighing platform which measures 5.5 by 5 inches features a fold-up top for weighing oversized items such as large flat envelopes or mailing tubes . the product is made of fine-textured high-impact abs plastic the ps100 operates either on ac with the included adapter or on a 9-volt battery not included and features a 1 minute warm up time . when operated on the battery an auto shut off features turns the ps100 off after 5 minutes to conserve battery life .