Group of 4 Chinese wooden geomancy compass (luopan) plate. These devices are part of the custom of determining the most auspicious placement of buildings and objects in harmony with the environment. The biggest one is D 17.5 cm(6.9 in.). Provenance: Property of Bruce Elliot Tapper Ph.D., a social anthropologist, journalist, writer, and editor. He was an editor at the Smithsonian Associates Program in the early 1980s and then had a career as an editor at the Library of Congress, the Smithsonian's National Museum of Asian Art, the American Occupational Therapy Association, and the United States Holocaust Memorial Museum. Preview from Dec. 11th to 15th from 1:00 PM TO 5:00 PM Eastern Time, Location: 15229 Display Court, Rockville MD 20850.