'Measuring rod' in the Bible

So He brought me there; and behold, there was a man whose appearance was like the appearance of bronze, with a line of flax and a measuring rod in his hand; and he was standing in the gateway.

And behold, there was a wall on the outside of the temple all around, and in the man’s hand was a measuring rod of six cubits, each of which was a cubit and a handbreadth. So he measured the thickness of the wall, one rod; and the height, one rod.