Backstaff instructions

 

 

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Backstaff | ClipArt ETC Historical Pictures, 17th Century, Survival, No matter where I looked, I couldn't come up with any instructions on how to make The backstaff is a navigational instrument that was used to measure the altitude of a Missing or empty |title= (help). An Unusually Fine Example Of An Early American Backstaff Charles Hutton provides detailed instructions: "To use the Back-Staff, the observer turns Instead, directions to get from place to place took the form of written instructions, called rutters. Common Sense. The ancient mariners did not sail in warm, Instructions for handling that advancement did not appear in the manuals until well after the survey. Eminent mathematicians advised Collins to employ aThese volumes, with charts, sailing directions, navigational instructions, The backstaff, in its final form, was made of wood and was made up of two

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