15 And he that talked with me, had a measuring reed to measure the city, and the gates thereof, and the wall thereof.
Revelation 21:15 Cross References - Whiston
Revelation 11:1-2
1 And there was given me a reed like unto a rod; saying, rise, and measure the temple of God, and the altar, and them that worship therein.
2 But the court which is without the temple cast out, and measure it not; for it is given unto the Gentiles: and the holy city shall they measure forty and two months.