An embodiment of a dimension verification gauge and related methods to enhance dimensional verification of a corrosion test specimen, may include a gauge body at least partially defining a gauge body outer surface. The dimension verification gauge further may include one or more gauge recesses in the gauge body outer surface. The one or more gauge recesses may have (a) a recess perimeter at least partially defining a recess opening and (b) a recess depth. One or more of (a) the recess perimeter or (b) the recess depth, may have a size corresponding to one of a minimum dimension or a maximum dimension, and the one or more of the minimum dimension or the maximum dimension may correspond to a predetermined dimension specification for the corrosion test specimen. A method for verifying dimensions of a corrosion test specimen may include observing a relative fit between a corrosion test specimen and a gauge recess.