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Orologio solare in legno di bosso inciso manifattura inglese metà XIX sec.

$1,796.71List Price

About the Item

Orologio solare dittico in legno di bosso inciso con cerniere e ganci di chiusura in ottone, a forma di libro, manifattura inglese metà- del XIX secolo. L’orologio è munito di bussola per l'orientamento inserita nella base con blocco dell’ago e completa di rosa su carta a otto venti e cerchio goniometrico. Lo gnomone è formato da un filo che viene messo in tensione, secondo la direzione dell'asse celeste, quando si apre il coperchio dell’orologio. Un’etichetta posta sulla parte interna del coperchio reca le indicazioni in lingua inglese circa il funzionamento dello strumento. All'interno del coperchio è tracciato il quadrante orario, con l'indicazione delle ore diurne. Ottimo stato perfettamente funzionante Misure chiuso cm 7,7x5,1x2- inches 3x2.1x1.6. L'ultima foto è la confezione regalo. Il funzionamento dell'orologio solare dipende dal movimento apparente del Sole. È costituito da uno gnomone o stilo che proietta l'ombra solare su una superficie solcata dal tracciato delle linee orarie. Per leggere correttamente l'ora, l'orologio deve essere orientato a nord, operazione che viene compiuta per mezzo della bussola. Questo semplice quanto ingegnoso sistema si è diffuso nel XVII e XVIII secolo mediante la produzione di esemplari, in legno o avorio. La meridiana è una linea orizzontale che passa per i punti Nord e Sud. Meridiana, nella nostra lingua, è anche sinonimo di orologio solare. Dall'antichità ai giorni nostri sono stati realizzati orologi solari diversi per tipo, forma e dimensioni, come ad esempio modelli portatili che svolgevano le funzioni dei nostri orologi da polso e da tasca. Popoli diversi e diverse culture hanno poi adottato vari modi di misura del tempo in rapporto alle loro necessità: infatti si possono ancora osservare meridiane antiche che non seguono le ore che usiamo oggi (ore astronomiche) ma, ad esempio, ore babiloniche, ore italiche, ore canoniche, ecc.

Dimensions:
Height: 7.7 in (19.56 cm)Width: 5.1 in (12.96 cm)Depth: 2 in (5.08 cm)
Materials and Techniques:
Wood
Period:
Mid-19th Century
Date of Manufacture:
1850
Condition:
Wear consistent with age and use.
Seller Location:
Milan, IT
Reference Number:
1stDibs: LU1020239771162

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