Mettler's PB Series precision balances offer advanced weighing technology you can count on for precise weighing applications.  Mettler offer 15 scales in the PB series to choose from depending on your weighing requirements.  Each is equipped with FACT (Fully Automatic Calibration Technology), an internal calibration system for ensuring your balance is providing accurate readings.  External calibration is also supported but requires an external calibration weight.  Other features include RS232 interface, weigh-below balance hook, as well as shock and overload protection.