02670nam 2200433 n 450 99639065600331620200824120755.0(CKB)4940000000099747(EEBO)2240864365(UnM)99830186e(UnM)99830186(EXLCZ)99494000000009974719950717d1690 uy |engurbn||||a|bb|The art of dialling[electronic resource] performed geometrically, by scale and compasses, Two several ways. Arithmetically, by the canons of signs and tangents: instrumentally, by a trigonal instrument, accommodated with lines for that purpose: the geometrical part whereof is performed by projecting of the sphere in plano, upon the plain it self, whereby not only the making, but the reason also of dials is discover'd. The third edition, enlarged. With a supplement, shewing how geometrically and mechanically to insert into all sorts of sun-dials, such circles of the Sun's course as gives the hour and length of the day, according to the account of several countries, &c. And to project and reflect hour-lines upon all sorts of superficies, plain or curved, without any regard had to their standing, either in respect of declination, or inclination. By William Leybourn, philomathLondon printed for Thomas Sawbridge, at the three Flower-de-luces in Little-BritainMDCXC. [1690][2], 166, [2], 24 p., [1] leaf of plate ill"A connexture of geometrical problemes, and astronomical elements", "The art of dialling geometrically performed, ..", "A second way of dialling", "The art of dialling instrumentally performed: ..", and "The art of dialling arithmetically performed, .." have caption titles; register and pagination are continuous."A supplement to geometricall dialling" (also published separately as Wing (2nd ed.) L1935) has separate dated title page, register and pagination.With an advertisement leaf preceding the Supplement.Reproduction of the original in the British Library.eebo-0018SundialsEarly works to 1800Mathematical instrumentsEarly works to 1800DialingEarly works to 1800SundialsMathematical instrumentsDialingLeybourn William1626-1716.1001442Leybourn William1626-1716.autCu-RivESCu-RivESCStRLINWaOLNBOOK996390656003316The art of dialling2306900UNISA