Next he measured the court. It was square, a hundred cubits long and a hundred cubits wide. And the altar was in front of the temple.
In these verses we have an account, I. Of the tables that were in the porch of the gates of the inner court. We find no description of the altars of burnt-offerings in the midst of that court till Eze 43:13.
Commenting on Ezekiel 40:39-49
court, an hundred cubits . . . foursquare--not to be confounded with the inner court, or court of Israel, which was open to all who had sacrifices to bring, and went round the three sides of the sacred territory, one hundred cubits broad. This court was one hundred cubits square, and had the altar in it, in front of the temple.
He measured the court - This was the court of the priests. See FFF in the plan.