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The Arthur Ross Terrace will be closed this morning, Tuesday, October 21, for a private cultural observance. You many observe smoke and/or fire coming from the Terrace at that time. The FDNY has been notified in advance, and all safety precautions are in place. The Terrace will reopen at 1 pm.

Book-Dial-(17th-century)_HERO

Book Dial (17th Century)

Book Dial (17th Century)

  • Exhibition Text

    • Ivory, glass, iron, pewter, string

      17th century, France

      As a traveler moved about, he could set the brace at the side of this dial to prop open the cover at angles match different latitudes. The compass card lists various cities and their latitudes, and the cover contains a perpetual calendar with changing moon phases.

      AMNH Hayden Planetarium Collection 2001

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American Museum of Natural History

Central Park West at 79th Street
New York, NY 10024-5192
Phone: 212-769-5100

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except on Thanksgiving and Christmas
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