Revelation 11:1

Then there was given me a reed like a rod: with this direction, rise and measure the temple of God, with the altar, and those that worship therein.

Revelation 21:15

he that talked with me, had a golden reed to measure the city, its gates, and its walls.

Treasury of Scripture Knowledge

Summary

Thus he shewed me: and, behold, the Lord stood upon a wall made by a plumbline, with a plumbline in his hand.

Bible References

A wall

Revelation 11:1
Then there was given me a reed like a rod: with this direction, rise and measure the temple of God, with the altar, and those that worship therein.
Revelation 21:15
he that talked with me, had a golden reed to measure the city, its gates, and its walls.