Patent ID: 8281640

Claim:
A method for tracing an identifiable check weight back in time, comprising the steps of: establishing the identifiable check weight through the substeps of: providing a specific weight piece; forming an identification code whereby the specific weight piece is given an individual identity by which it can be recognized; converting the identification code into a machine-readable code format; affixing the converted code in the machine-readable format onto the specific weight piece as a marking; storing the identification code in a database; and generating a calibration certificate that associates the specific weight piece with the identification code; recalibrating the check weight having its identification code stored in the database; generating a new certificate for the recalibrated check weight, based upon the recalibrating step; and establishing, in the database, a history file for the recalibrated check weight, based on the chronological sequence of certificate data therefor in the database.