helixometer

noun
helix·​om·​e·​ter

Definition of helixometer 

: a tubular instrument in which an electric light and a prism and lens system enable visual examination of a small-arms bore (as in criminal investigation)

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History and Etymology for helixometer

helix + -o- + -meter

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Dictionary Entries near helixometer

helix

helix angle

helixin

helixometer

hell

Hell

hell's bells

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