Apparatus for surveying and ascertaining sighting errors in shooting practice against moving targets, especially airplanes
作者： Fischer Frederich Ernst
DOI:
关键词: Ammunition 、 Forensic engineering 、 Aeronautics 、 Engineering
摘要: The present invention relates to an improved apparatus for surveying and ascertaining sighting errors in shooting practice against moving targets, especially airplanes, particularly employing percussion-primed ammunition. This application is a continuation part...
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