Ezekiel 40:17-19

17Then he brought me into the outer court, and there were chambers and a paved surface laid out all around the court. Thirty chambers faced the pavement,

18which flanked the courtyard’s gates and corresponded to the length of the gates; this was the lower pavement.

19Then he measured the distance from the front of the lower gate to the exterior front of the inner court; it was 175 feet. This was the east; next the north is described.