[NOTE: There is a short list of bookmarks, or pointers, at the end of the file for those who may wish to sample the author's ideas before making an entire meal of them. D.W.] The "Error of the Day" may be defined as "The difference between the distance or range which must be put upon the sights in order to hit the target and the actual distance from the gun to the target."--Admiralty Note.…
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