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Antique Chinese Wood Diptych Dial

$449.00

Offered for sale is an antique, very rare, Chinese wood Diptych Dial, approximately 2" square, hinged, with Chinese calligraphy writing on all sides, in very fine condition, with a recessed compass inside, with a string gnomon.

Diptych sundials. Diptych sundials have two plates hinged together, and in use open out to form a right angle, with the string hinge operating as a gnomon. This ivory example was made in the 17th century in Dieppe in France. The photograph shows the inside of the base.

There is a sunk compass on the base.

Lit: "Diptych Sundials (1570-1750), catalogue of the Collection of Historical Scientific Instruments, by Steven A. Lloyd, 1992, Harvard University Press, ISBN 0-674-46977-1.

What if you want to know the time, but the year is 1800? Watches are delicate, prohibitively expensive, and the size of a turnip. Clocks live in bell towers, or at best are the size of a small grandfather. Use a sundial!

Sundials have problems of their own. You have to know true North to set them up, and they should be level. People can guess "level" rather well, but for North it helps to have a compass.

This diptych dial folds up to fit in your pocket, and does the job. It's a little under two inches by three, and has a compass for North. There is a string to cast the shadow on the dial; its position can be adjusted for latitude. There is a printed list of cities and their latitude on the back; when you arrived in London you'd look up its latitude, adjust the string, and check the time any sunny moment you wanted.

The gnomons-style is a string stretched between a horizontal and vertical face. This sundial also has a small nodus (a bead on the string) that tells time on the hyperbolic pelikinon, just above the date on the vertical face. The diptych consisted of two small flat faces, joined by a hinge.[68] Diptychs usually folded into little flat boxes suitable for a pocket. The gnomon was a string between the two faces. When the string was tight, the two faces formed both a vertical and horizontal sundial. These were made of white ivory, inlaid with black lacquer markings. The gnomons were black braided silk, linen or hemp string. With a knot or bead on the string as a nodus, and the correct markings, a diptych (really any sundial large enough) can keep a calendar well-enough to plant crops. A common error describes the diptych dial as self-aligning. This is not correct for diptych dials consisting of a horizontal and vertical dial using a string gnomon between faces, no matter the orientation of the dial faces. Since the string gnomon is continuous, the shadows must meet at the hinge; hence, any orientation of the dial will show the same time on both dials.

Shipping: FREE to the United States. We also will ship worldwide.

Shipping to the Continental United States is FREE. Please look at the picture and read the description, which form a part of the condition description. What you see and what you read is what you are buying

International purchasers should contact sellers at: CAPTAINMADISON@ATT.NET for a shipping and insurance quote to your address and country. International purchasers should appreciate that the Customs Dept. of your country may assess duties, taxes and/or other charges on your purchase as it enters your country, which expenses are not part of the purchase price for this item and remains the sole expense of the purchaser.

This product would make a wonderful addition to any scientific instrument or sundial collection when displayed in a prominent place, being a grand collectible item that would adorn any serious collector's prized scientific instrument and sundial accumulations, while showing a discriminating dedication for fine sundials and other scientific instrument items as well as a devotion to acquiring fine collectibles.

Sellers exclusively use the USPS as its' shipper (insurance available).

Please email sellers to: CAPTAINMADISON@ATT.NET for purchasing, payment, shipping arrangements, requests for more photos, as well as any other inquiries.

Payments may be made by check (must clear), bank checks, postal or bank money orders, Western Union money transfers, pre-payment arrangements, good old U.S. Dollars (green currency), and/or other secure money transfers or payments.

Please regularly visit our other web sites for more sundials and scientific instruments and related products as we shall regularly be adding more products from time to time:

www.antique_scientific_instruments.com

www.oldsundial.com.

www.vintagesundial.com

www.antiquesundials.com

Price: $495.00

Shipping: $12.65 to the United States. We also will ship worldwide.

Shipping to the Continental United States is $12.65 All sales final. No returns on this item. Please look at the picture and read the description, which form a part of the condition description. What you see and what you read is what you are buying

International purchasers should contact sellers at: CAPTAINMADISON@ATT.NET for a shipping and insurance quote to your address and country. International purchasers should appreciate that the Customs Dept. of your country may assess duties, taxes and/or other charges on your purchase as it enters your country, which expenses are not part of the purchase price for this item and remains the sole expense of the purchaser.

This product would make a wonderful addition to any scientific instrument or sundial collection when displayed in a prominent place, being a grand collectible item that would adorn any serious collector's prized scientific instrument and sundial accumulations, while showing a discriminating dedication for fine sundials and other scientific instrument items as well as a devotion to acquiring fine collectibles.

All sales final. No returns on this item. Please look at the photos and read the description as what you see and read is what you are buying.

Sellers exclusively use the USPS as its' shipper (insurance available).

Please email sellers to: CAPTAINMADISON@ATT.NET for purchasing, payment, shipping arrangements, requests for more photos, as well as any other inquiries.

Payments may be made by check (must clear), bank checks, postal or bank money orders, Western Union money transfers, pre-payment arrangements, good old U.S. Dollars (green currency), and/or other secure money transfers or payments.

Please regularly visit our other web sites for more sundials and scientific instruments and related products as we shall regularly be adding more products from time to time:

www.antique_scientific_instruments.com

www.oldsundial.com.

www.vintagesundial.com

www.antiquesundials.com


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  • Model: Antique Chinese Diptych Dial


This product was added to our catalog on Friday 18 July, 2014.

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