There may be more to calibre than the size of a gun barrel

There may be more to the quality of a person than the size of their reputation

There may be more to calibrating a gauge if the reliable Criterion is misplaced

There may be more to Excalibur if it has been misspelt

There may be more to the Y chromosome if it is a sword stuck in the rock of the XXYX

There may be more to articulation than a wagon pulling a gun carriage