An elongated microscope for checking on the finish and rifling of gun barrels

Title (Dublin Core): An elongated microscope for checking on the finish and rifling of gun barrels
Subject (Dublin Core): en Technology; en Other
Article Title and/or Image Caption (Dublin Core): It looks for trouble in the cannon's mouth
extracted text (Extract Text): AN ELONGATED microscope is doing an inside job on gun

tubes, making sure that no interior flaws slow up shells
in flight to the Axis. Known as the borescope and made by the
Lenox Instrument Co., Philadelphia, this instrument probes
‘back and forth in a gun bore, while the operator looks through
the lens at every inch of the interior, checking on the finish
and rifling. A lamp in the viewing head illumines the path of
the instrument, and a rotating mirror reflects the images.
Large Borescopes are often more than 25 feet in length.
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War II
Date Issued (Dublin Core): 1944-01
Is Part Of (Dublin Core): Popular Science Monthly, v. 144, n. 1, 1944
pages (Bibliographic Ontology): 61
Rights (Dublin Core): Public Domain (Google digitized)
Source (Dublin Core): Google Books
References (Dublin Core): Philadelphia
Archived by (Dublin Core): Lorenzo Chinellato; Marco Bortolami (editor)
Spatial Coverage (Dublin Core): United States of America