Sundials - World's Oldest Clocks

North American Sundial Society

Selected Sundials of North Carolina

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Chapel Hill North Carolina USA Horizontal Dial 101
A 35 foot diameter horizontal dial of terrazzo with inset bronze hour lines and Roman hour numerals. The bronze gnomon edge is 24 feet long and at the tip stands 14 feet tall. In the base of the gnomon is a circular opening, holding a large inset bronze hour glass. In the terrazzo at the dial center is an inset bronze sun graphic with wavy spicules; this inset contains a US Coast and Geodetic Survey Triangulation Station marker. A plaque gives correction for EOT and longitude.
Charleston South Carolina USA Vertical Recliner Dial 361
A 20 foot stone monument with a 2 foot diameter vertical recliner dial. See the NASS Compendium Vol.6 No. 1 Dec 1998. The platform in the base includes stones from the thirty-eight home states of those lost. Imbedded in the in the platform is a bronze arrow, pointing to the unmarked grave in the Atlantic.
Charleston South Carolina USA Horizontal Dial 718
A weathered 10 by 15 inch oval marble horizontal dial with bronze gnomon. Dial face has hour lines with Roman numerals showing standard time. Dial sits atop a concrete pedestal with two steps at base. Pedestal has insets on faces, one of which carries a marble plaque with barely readable inscription.
Charleston West Virginia USA Equatorial Dial 474
A bronze equatorial sundial, about 4 feet in diameter.
Charlestown Massachusetts USA Horizontal Dial 268
A 10 foot diameter bronze and granite horizontal dial with bronze gnomon and Arabic hour numerals on a 2 foot high granite base. Craftspeople of Colonial days are pictured on the face of the sundial. Sculptures depict a grandpa holding a baby while looking at the dial from the east side and a child peeking from behind the 5 foot tall bronze gnomon. Each bronze hour numeral includes a scene sculpture.
Chattanooga Tennessee USA Horizontal Dial 670
An 18 foot diameter horizontal dial of concrete and pebble with a cast bronze figure of a boy with outstretched arm, the 8 foot high finger tip of which serves as a point-in-space gnomon. The dial face includes hour marks and declination lines. An open book plaque on the bronze statue base gives instructions. Substantial surrounding building clutter blocks the sun for much of the day, rendering the dial without shadow.
Chesterfield South Carolina USA Armillary Dial 274
ca 20' Bronze Spherical bronze sundial consisting of three intersecting circles supporting an arrow shaped gnomon. Open mouthed gargoyles surround the column's highly carved capital atop a white octagonal column 33 inches high.
Chicago Illinois USA Equatorial Dial 271
ca 8' dia. Stone ca 7' high Two curved C shaped forms placed at perpendicular angles.
Chicago Illinois USA Horizontal Dial 296
Approximately 4 foot diameter. A cement disk with a cleft at the top acts as a sundial. Cement, wood.
Chicago Illinois USA Collection Dial 119
Mensing Collection
Chicago Illinois USA Collection Dial 120
John C. Tomlinson Collection
Chicago Illinois USA Equatorial Dial 223
Henry Moore Sundial Sculpture: 13 foot bronze equatorial dial built in 1980. Two bronze semicircles, one set inside and at right angles to the other, form the main elements. A slim rod runs from one end of the outer semicircle to the other end and its shadow on the inner semicircle below marks the time of day. EOT correction is provided.
Chicago Illinois USA Equatorial Dial 228
Equatorial in bronze. 2 meters in diameter. Arabic hour numerals. Hour scale is subdivided into 5 minute intervals.
Cincinnati Ohio USA Equatorial Dial 26
The sun-clock was based on an illustration that appeared in Scientific American, with dimensions and shape of analemma calculated from data found in an almanac. An equatorial ring, with inside dimension of 16' and engraved with an hour circle, is fastened orthogonally to a meridional ring and the assembly is rotated on a polar axis until a lens focuses the image of the sun on the analemma line. Knowing the season, the month and approximate day can be read from the analemma scale and standard time to the nearest minute. from the hour circle. Dial is operable, but bearings are in need of repair. A duplicate of the 1986 sun-clock is believed to be located on the former Kroger estate in suburban Cincinnati. The dial sits atop a brick platform with capstone
Claremont California USA Equatorial Dial 505
A 90 inch diameter spherical segment equatorial dial ten feet high of masonry construction with 3D fiberglass analemmic gnomon 40 inches long. Dial terrazzo face has hour, half-hour, quarter-hour and 5-minute marks with Roman hour numerals for PST. The 5-minute marks are one inch apart. Dial face includes analemma graphic with month dates; a plaque describes how to use the analemma graphic to select which side of the gnomon shadow to use to read time. Base perimeter has 12 ceramic plaques with Zodiacal signs. Indicated time is accurate to one minute throughout the winter and to five minutes in summer. This is remarkable because the dial is located just outside a children's playground and children routinely climb on the dial and swing from the gnomon. An animation from digital images showing the gnomon shadow motion over the course of a full year is available. Dedicated as the Ralph B. Larkin Memorial Sundial. Rev. Larkin was a retired missionary who taught science to children for 17 years in Claremont. Dr. Larkin's father was Edgar Lucien Larkin, Director of the Mt. Lowe Observatory above Los Angeles 1900-1924 using a 16-inch Alvan Clark refractor telescope, described by Alvan Clark as, "the finest telescope I ever made." Ralph Larkin often said, "I grew up with a telescope." The Mt. Lowe Observatory was destroyed in a windstorm in 1928 and the Alvan Clark refractor was moved to Ricard Observatory at the University of Santa Clara, California.
Claremore Oklahoma USA Horizontal Dial 549
A 24x36 foot all-concrete horizontal dial with marks to indicate summer solstice and equinox. Located on private property; contact owner Dan Wilson to arrange viewing.
Clear Lake Shores Texas USA Equatorial Dial 673
An approximately four foot diameter ring equatorial dial of painted steel with Roman numeral hour marks and a long double-bar steel gnomon. Ring is sagging somewhat at base support, perhaps from being climbed upon.
Cleveland Ohio USA Horizontal Dial 270
Horizontal dial 50 ft in diameter. Bronze octagonal sundial with flaring flange decorated with the 12 signs of the zodiac. Dial rests on an octagonal stone pillar.
Cleveland Ohio USA Armillary Dial 285
37' Iron Composed of four iron rings bisected by an arrow. Mounted atop an upright cylinder. Gift of Lucile Teeter Kissach. Restored 1993.
Cleveland Ohio USA Horizontal Dial 619
A 7 foot diameter semicircular inclined horizontal dial of concrete with a bronze gnomon. Gnomon support features a cast representation of a nautilus shell. Each hour arc is marked with a geologic period within the "542 million year period" most animal life has evolved.