The new American practical navigator : being an epitome of navigation, containing all the tables necessary ... (1802)
Bowditch, Nathaniel, 1773-1838, Lee, Marvin, former owner. DSI, Stuart, Gilbert, 1755-1828 DSI, Burndy Library, donor. DSI · [Salem] : Printed at Newburyport, Mass., 1802, by Edmund M. Blunt, for Cushing and Appleton, Salem : Sold by every book-seller, ship- chandler, and mathematical-instrument-maker in the United States and West Indies · leaf 58
inch, and this pofitionof the fe&or will produce the given fcale. Example 4. It is required to reduce a fcale of 6 inches to a degree,Jo another of 3 inches to a degree ? Make the tranfverfe diftance 6 and 6, equal to the lateral diftance 3 and3 ; then fet off any diftance from the chart… … Suppofe the fide A B of the triangleABC meafures 50, what are the meafureso£ the other two fides ? Take A B in your compaffes, and apply it tranfverfely to $0 and jo %to this opening of the fe&or apply the diftance A C in your compaffes tothe fame number on both fides of the rule tranfverfely ;…
Navigation · Nautical astronomy
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