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 150
nd this fecond divifion, 6° 40, andthe mark 7 of the vernier was found to touch a mark of the arch, the anglev.*ould be 6° 47. The index giafs E is a piece of glafs truly ground, filvered on the back,sndfixed in a brafs frame perpendicularly to the index : its ufe is to receivethe rays proceeding… … The principal farts of this Inftrumeni are Thelndear_ J). T/telndeoc Crlafs E.JheJforixoTi Glafieej Cr anct.JF.The dark Glafee? or>J^?r<?/?j?...H,The Sight lanesY^aud I. Newburyport Published hi/ Edmund 2*[. Bta»t. DESCRIPTION AND USE OF THE QUADRANT. ij? The horizon glaffes F and G are…
Navigation · Nautical astronomy
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