Ezekiel 40:4-6
English Standard Version
5And behold, there was a wall all around the outside of the temple area, and the length of the measuring reed in the man 's hand was six long cubits, each being a cubit and a handbreadth in length. So he measured the thickness of the wall, one reed; and the height, one reed.
6Then he went into the gateway facing east, going up its steps, and measured the threshold of the gate, one reed deep.