02125nam 2200409 n 450 99639040040331620200824120642.0(CKB)4940000000099531(EEBO)2240856471(UnM)99829297e(UnM)99829297(EXLCZ)99494000000009953119950530d1689 uy |engurbn||||a|bb|A supplement to geometrical dialling[electronic resource] /by William Leybourn, philomath. Shewing how by scale and compasses to inscribe such circles of the sphere into sun-dial-plains, that shall shew (besides the hour of the day) the diurnal motion of the Sun; his place in the zodiack; the time from his rising, and setting; the Babylonian, Italian, and Jewish hours; the point of the compass upon which the Sun is at any time of the day, and the proportions of shadows to their heights. Also a general and easie way to project hour-lines upon all kinds of superficies, without any regard had to their standing, either in respect of declination, reclination, or inclination. And how from a glass horizontally placed in the soyl of a window, to reflect hours upon any superficies, either flat, or curved; one, or manyLondon printed for Thomas Sawbridge, at the Three Flower-de-luces in Little-Britain168924 pRunning title reads: Geometrical dialling.An imperfect copy, lacking t.p., also appears as part of Wing (2nd ed.) L1902 at reel 2009:9.Reproduction of the original in the British Library.eebo-0018DialingEarly works to 1800SundialsEarly works to 1800Mathematical instrumentsEarly works to 1800DialingSundialsMathematical instrumentsLeybourn William1626-1716.1001442Cu-RivESCu-RivESCStRLINWaOLNBOOK996390400403316A supplement to geometrical dialling2320615UNISA