Pelouze Manufacturing Company Replacement Chip, For PE5R Scale, With Rate/Zone Button The 5 lb. scale calculates U.S.P.S. (1st Class, Priority, Express Mail, Canada, Mexico, and International Air Mail to all other countries) rates for multiple rate comparisons at the touch of a button. Compact size stores easily. Covers a range of letter and package sizes. Displays weight in pounds and ounces with 0.1 oz. or 2 gram increments. Displays readouts instantly for faster processing. Tare feature separates weight of contents from package. Color-coded panel simplifies the rate choices. Easy-to-read LCD display shows dollar charge and a line indicating class of service or weight. Offers memory hold to lock in weight of large packages and oversized letters. Platform measures 5-3/8" x 5-3/8". Offers high-impact plastic chassis. Auto shut-off extends battery life. Low battery condition indicated. Not legal for trade. Operates on AC adapter or a 9 volt battery (not included). Replaceable memory chips are available for future U.S.P.S. rate changes.