Ivory Diptych Sundials, 1570-1750

by A.J. Turner, Penelope Gouk, Harvard University

During the sixteenth and seventeenth centuries, ivory diptych sundials were widely used to determine the time by day or night. These elaborate portable sundials, which could be adjusted for different latitudes, incorporated various devices useful for merchants and others who traveled extensively in Europe. This catalog illustrates in detail Harvard's collection of eighty-three ivory diptych sundials, one of the largest holdings of these instruments...

• Format: Hardcover
• Language: English
• ISBN: 0674469771
• ISBN13: 9780674469778
• Release Date: January 1992
• Publisher: Harvard Collection of Historical Scientific I
• Length: 150 Pages
• Weight: 0.25 lbs.
• Dimensions: 0.8" x 8.9" x 11.3"