Precision balances are used in laboratories for weighing. Precision balances are calibrated by the manufacturer or factory. ISO-calibrated precision balances are calibrated by an ISO-certified laboratory. An optional ISO calibration certificate is available for purchase as an accessory to any precision balance product offered by PCE Instruments (PCE).Depending on the model of precision balance chosen for your particular application, your precision balance may be equipped with a USB port, RS-232 interface or Bluetooth adapter to allow the weighing data to be transferred to a computer for detailed analysis and documentation.