Matches in DBpedia 2015-10 for { ?s ?p "The Aberdeen chronograph was the first portable instrument for measuring ordnance muzzle velocity and striking power. It was invented in 1918 by Alfred Lee Loomis at the U.S. Army's Aberdeen Proving Ground. The method prevalent at the time was the Boulenge chronograph, which relied on the projectile breaking two wire screens and measuring the time between circuit-breaking."@en }
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- Aberdeen_chronograph comment "The Aberdeen chronograph was the first portable instrument for measuring ordnance muzzle velocity and striking power. It was invented in 1918 by Alfred Lee Loomis at the U.S. Army's Aberdeen Proving Ground. The method prevalent at the time was the Boulenge chronograph, which relied on the projectile breaking two wire screens and measuring the time between circuit-breaking.".