Fire watchers in Vienna using a telescope mounted so that the location of a fire could be determined accurately by means of the position of a needle in the divided scale map of the city.

---

Size: 4056px × 5170px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, accurate, accurately, austria, century, city, determined, divided, emergency, fire, location, london, map, means, mounted, needle, position, scale, services, telescope, vienna, watchers