01879nam 2200409 n 450 99639045770331620200824120759.0(CKB)4940000000102226(EEBO)2240893580(UnM)99841545e(UnM)99841545(EXLCZ)99494000000010222619910408d1633 uy |engurbn||||a|bb|An addition vnto the vse of the instrument called the circles of proportion, for the working of nauticall questions[electronic resource] Together with certaine necessary considerations and advertisements touching navigation. All which, as also the former rules concerning this instrument are to bee wrought not onely instrumentally, but with the penne, by arithmeticke, and the canon of triangles. Hereunto is also annexed the excellent vse of two rulers for calculation. And is to follow after the 111 page of the first partLondon Printed by Augustine Mathewes1633[2], 74, [4] p. tablesBy William Oughtred.Issued with the various states of his: The circles of proportion and the horizontal instrument.Includes tables.Errata pages at end.Reproduction of the original in the Cambridge University Library.eebo-0021Mathematical instrumentsEarly works to 1800NavigationEarly works to 1800Mathematical instrumentsNavigationOughtred William1575-1660.744583Cu-RivESCu-RivESCStRLINWaOLNBOOK996390457703316An addition vnto the vse of the instrument called the circles of proportion, for the working of nauticall questions2402865UNISA