ASTM D2658 Standard Test Method for Determining the Dimensions of Fiberboard Boxes specifies methods to be used for accurate measurement of the internal and External dimensions of single-wall, double-wall corrugated and solid fiberboard boxes. Correct sizing is critical to the performance, stacking Stability, and assembly efficiency of boxes. This standard provides specific methods for measurement of internal and External dimensions, including the use of the tape method and the box gauge method, to ensure that boxes meet design specifications and tolerance requirements. The standard requires dimensional measurement of production lots or individual boxes to verify that they are within specified tolerances and to ensure their suitability for a variety of transportation and storage needs.