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
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