'Thickness' in the Bible

As for the pillars, the height of each pillar was eighteen cubits, and it was twelve cubits in circumference and four fingers in thickness, and hollow.

And behold, there was a wall on the outside of the temple all around, and in the man’s hand was a measuring rod of six cubits, each of which was a cubit and a handbreadth. So he measured the thickness of the wall, one rod; and the height, one rod.

The thickness of the outer wall of the side chambers was five cubits. But the free space between the side chambers belonging to the temple

In the thickness of the wall of the court toward the east, facing the separate area and facing the building, there were chambers.