Cross reference
Jeremiah 31:39
39 And gone out again hath the measuring line Over-against it, unto the height of Gareb, And it hath compassed to Goah.
Zechariah 2:1-2
1 And I lift up mine eyes, and look, and lo, a man, and in his hand a measuring line.
2 And I say, `Whither are thou going?' And he saith unto me, `To measure Jerusalem, to see how much `is' its breadth, and how much its length.'
Ezekiel 40:8
8 And he measureth the porch of the gate from within one reed,