How should front panel inward deformation be measured?

The measurement of front panel inward deformation should be taken from the exterior recessed corrugation. This method provides a consistent and accurate reference point for assessing the extent of deformation. The exterior recessed corrugation is a structured part of the container that is designed to maintain the integrity of the panel. By measuring from this area, one can ensure that the measurement reflects true deformation without the influence of interior elements or damage, allowing for a clearer assessment of the front panel's condition and overall structural integrity.

Using a location that may not provide a clear and standardized measurement, such as interior surfaces or other panels, can lead to inconsistencies in evaluations. These reasons highlight why measuring from the exterior recessed corrugation is deemed the most reliable and effective approach in this context.