Ezekiel 40:3-5

MLV(i) 3 And he brought me there, and behold, there was a man, whose appearance was like the appearance of brass, with a line of flax in his hand and a measuring reed. And he stood in the gate.
4 And the man said to me, Son of man, behold with your eyes and hear with your ears and set your heart upon all that I will show you. For you are brought here to the intent that I may show them to you. Declare all that you see to the house of Israel. 5 And behold, a wall on the outside of the house all around and in the man's hand a measuring reed six cubits long, of a cubit and a handbreadth each. So he measured the thickness of the building, one reed and the height, one reed.