£500 - £700
(Horology, Mathematics.) Bruni's Armonia Astronomica & Geometrica. Bruni, Teofilo: 'Armonia Astronomica & Geometrica...divisa in quatro trattati, ne' quali s'insegna la ragione, e formatione di tutti gli horologi stabili, e mobili ad ogni clima, & uso del mondo, per nuoui, & brevi computi astronomici, per via geometrica, & anco per practica, con istrumenti eccellentissimi.', In Venetia [Venice]: presso Giovanni, & Varisco Varischi, 1622, [12],64,55,[1],54,60,[8]pp, 3 folded leaves of plates bound in. 4to. In early vellum binding with spine relaid, new endpapers. One leaf in fourth part (pp. 33/34) supplied in facsimile. Some browning largely to index leaves. A rare work which deals with sundials and their mathematics and construction, numerous engravings of sundials. One of the earliest works in which there is a decided emphasis on the decorative value of the sundial with the fourth part explaining their construction in unusual shapes including a vase, an egg, a harp and an angel. Presented in a clamshell box, with three of the volvelles copied, cut out and mounted on vellum [NB the original volvelle illustrations are still intact in the book - these are additional facsimiles]. Facsimile leaf sourced by the British Library and produced by Hannah Bagshaw.
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