Ezekiel 42:15-20
42:15 Now when he had finished measuring the interior of the temple, he led me out by the gate which faces east and measured all around.
42:16 He measured the east side with the measuring stick as 875 feet by the measuring stick.
42:17 He measured the north side as 875 feet by the measuring stick.
42:18 He measured the south side as 875 feet by the measuring stick.
42:19 He turned to the west side and measured 875 feet by the measuring stick.
42:20 He measured it on all four sides. It had a wall around it, 875 feet long and 875 feet wide, to separate the holy and common places.