Abstract: A package inspection apparatus is provided, and includes a conveyor for transporting a package, a pressure unit for applying a compressive force to the package, a tracer movable over the upper surface of the package for measuring package attributes along a dimension of the package, and a processor. According to some embodiments, the processor determines a trace area of the package from the package measurement attributes. According to certain embodiments, the measured package attributes are compared to a running average, and if the package is within predetermined tolerances, the package measurement attributes are averaged into the running average. Also provided is a related method.