A periscope for tanks

Title (Dublin Core): A periscope for tanks
Subject (Dublin Core): en Technology; en Tanks and Armored Vehicles
Article Title and/or Image Caption (Dublin Core): A periscope for tanks
extracted text (Extract Text): A PERISCOPE FOR TANKS has been invented by an
Army officer, Lt. Col. David J. Crawford, to over-
come one of the greatest handicaps faced by tank
commanders—the near blindness caused by the nar-
rowness of the sight slits in a tank's armor. The
officer using the periscope sits with his face six inches
from it, using both eyes to see a section of terrain
nearly as wide as an outside view. When he sees a
target, he closes his left eye and sights
through an aiming telescope, which is
part of the apparatus. Gun and peri-
scope are rotated simultaneously until
the target appears in the reticule of
the telescope, when the gun is fired.
The exposed mirror of the telescope
is easily replaced if shattered.
Contributor (Dublin Core): Abbott Griffin (illustrator)
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War II
Date Issued (Dublin Core): 1944-05
Is Part Of (Dublin Core): Popular Science Monthly, v. 144, n. 5, 1944
pages (Bibliographic Ontology): 91
Rights (Dublin Core): Public Domain (Google digitized)
Source (Dublin Core): Google Books
References (Dublin Core): United States Army
Archived by (Dublin Core): Lorenzo Chinellato; Alberto Bordignon (Supervisor)