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 48
ll contain Itf 2«/, Draw GB; take the chord of 6o° in yourCompaffes, and with one foot on G defcribean arch BGHE* upon which fet off the chordof 66° (which 70a already have in your com-p^affes) from B toGj and from G toH ; thenfet offfrbm G to E, the excefs of the givenangle above 6o°, which is… … PROBLEM IX. To blfe 8 a gi<i>en arch of a circle AB> ivhofe centre is Ci Take in youocompaffes any extent greatefthan the half of AB, and with one foot in A^defcribe an arch ; with the fame extent andone foot in B, defcribe* another arch cuttingthe former in D ; join CD and it is done ;…
Navigation · Nautical astronomy
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