EXAMINATION AND EVALUATION OF CANADIAN AIMING CIRCLE Open PDF Document Details Document Type Technical Report Publication Date May 01, 1953 Accession Number AD0012498 Entities People W. W. Hollis Organizations Frankford Arsenal Tags Communities of Interest Weapons Technologies DTIC Thesaurus Topics Assembly Bearings Elevating Gear Elevation Gears Instructions Leveling Line Of Sight Munitions Searchlights Security Telescopes Test And Evaluation Weapons Worm Gears