In 21:16, the angel measures the city with a golden rod or reed, and records it as 12,000 stadia by 12,000 stadia at the base, and 12,000 stadia high. A stadion is usually stated as 185 meters, or 607 feet, so the base has dimensions of about 2220 km by 2220 km, or 1380 miles by 1380 miles.