Albert Barnes Commentary 1 Kings 7:31

"And the mouth of it within the capital and above was a cubit: and the mouth thereof was round after the work of a pedestal, a cubit and a half; and also upon the mouth of it were gravings, and their panels were foursquare, not round." — 1 Kings 7:31 (ASV)

It seems impossible to determine what is meant by the “mouth” of the laver, or what is meant by its “capital.”