Aircraft warning service. At the filter center, each of the girl plotters is in charge of a section of the map. She receives all messages from spotters in her area and places a marker, called a "pip" on the spot where the plane has been observed. The pip is moved on at each new report, leaving a trail of arrows across the map to show the plane's direction. After a plane has been reported three times the pip is removed and replaced by a standard
Summary
Public domain photograph of people around a table, meeting, boardgame, free to use, no copyright restrictions image - Picryl description
Tags
Date
01/01/1943
Contributors
Palmer, Alfred T., photographer
United States. Office of War Information.
Location
new york
Source
Library of Congress
Copyright info
Public Domain