Sundials - World's Oldest Clocks

North American Sundial Society

Sundials of North America

This is a complete listing of sundials in the North American Sundial Society Registry. Click on any dial thumbnail picture or city name to display our complete listing and images. To see sundials in a particular state or province, you may click on the list at left to see all registered sundials in that state, province or country (at bottom) displayed in city order.

 
 
La Porte Texas USA Armillary Dial 216
Approximately 6 foot diameter bronze armillary dial with equatorial, meridian and equinoctial colure rings and with Arctic and Antarctic circle rings. Hour lines have 5 minute marks and Roman numerals. Equatorial ring has Zodiacal signs. Base shows the Great Seal of Texas and includes a bronze eternal flame. Names of fallen heroes are inscribed on the base and paths to and from the dial lead to location of Sam Houston's troops prior to the battle of San Jacinto. The San Jacinto Monument is seen in the distance.
 
 
New York New York USA Equatorial Dial 215
A half-cylinder equatorial dial whose body structure is exactly the same as the one (#28) at Trinity College, Hartford, CT, only the pedestal here is lower. Named ?The Camp Columbia Sundial?, a gift of Camp Columbia to memorialize Dean Hennessy (1917-1991).
 
 
El Cajon California USA Armillary Dial 214
Armillary dial about 3 ft. diameter designed by Don LeGrande. As of Christmas 1992, a stunning armillary sphere-type of sundial ... The framework of the dial is constructed of burnished stainless steel. ... The rod-like gnomon was destroyed by vandals many years ago, but the rest is in good shape.
 
 
San Diego California USA Horizontal Dial 213
This is not the Koester dial at SDSU, but a far more interesting horizontal dial originally dedicated to the San Diego Normal School for elementary teaching by the class of June, 1911. The 18-inch octagonal bronze dial was originally designed by San Diego Clock maker Joseph Jessop and mounted on a miniature Doric column. The dial was placed within the circular lawn directly in front of the school's main entrance at the intersection of Park and El Cajon Boulevards.
 
 
Anacortes Washington USA Vertical Dial 212
4'x8' Marine Plywood & Aluminum Gnomon and struts made of copper plumbing pipe. Refurbished by Threat in 1992.
 
 
Windsor Connecticut USA Equatorial Dial 211
Equatorial dial about 5 ft. diameter made of brass and stainless steel The analemma is incorporated into the gnomon compensating for equation of time. Equatorial ring is rotated to compensate for difference in longitude to time zone. Designed and built by Physics/Astor Dept, University of Calgary, Alberta Canada. Dial sits atop a stone plinth marked with Keller's laws.
 
 
Washington District of Columbia USA Horizontal Dial 210
Circular horizontal dial 20 in. diameter cast in bronze. Has Roman numerals at hours and 15 minute marks. Gnomon missing from dial, but kept by groundskeeper, as it will not stay in place. Was temporarily re-installed for the NASS tour in 1995. The dial is modern, honoring George Donald Meid for service to the National Academy. Dial is mounted atop a concrerte cylindrical post.
 
 
Washington District of Columbia USA Horizontal Dial 208
Large, ground level horizontal dial 16 ft. in diameter with 49 in high stepped hollow painted-green metal gnomon that is 5 ft 16 in long. Roman hour numerals with hour lines from 4:30 AM to 9:30 PM. Gnomon structure recalls the much larger Indian observatory dials. An appropriate poetic passage, once bolted to the gnomon, has disappeared.
 
 
Washington District of Columbia USA Vertical Dial 207
Vertical bronze dial with Arabic numerals and long cast sunburst gnomon. On oblong sandstone. Dial is 60-80 feet up on an octagonal power plant smokestack. It is difficult to read, but safe from vandalism. School dated 1928. Similar to Eastern High School (#202).
 
 
Washington District of Columbia USA Vertical Dial 206
Sandstone Vertical declining dial, with gnomon offset to account for it. Above doors to rear terrace of admissions building. Arabic hour numerals with half hour lines. Carved hourglasses on both sides frame the dial. Brass compass rose set into the brick terrace below suggests the general alignment of both house and dial.
 
 
Washington District of Columbia USA Armillary Dial 205
Very nicely armillary sphere about 3 ft. diameter, with equatorial, meridional and hour circles. Roman hour numerals from 5 AM to 7 PM. One of Washington DC's cleanest examples of a working armillary sphere. Erected by the Georgetown Garden Club in 1956 in tribute to Sarah Louisa Rittenhouse. Dial is placed atop a sandstone pillar.
 
 
Washington District of Columbia USA Horizontal Dial 204
Horizontal dial about 16 inch square made of bronze. Gnomon is 4.125 inch high, 5 inch long. Below gnomon is motto, "Horas non numero nisi serenas" (I only count sunny hours). House was built in 1805 and is now open to the public as a museum. Years before this property was opened to the public, a family member brought this dial from Crossbasket Castle in Scotland, the family seat. The lengthy inscription is probably a later addition, since it is unlikely that they would be quoting Whittier in Scotland. The gnomon angle is 39? 30', probably made for the Washington DC location. However, the dial plate has a latitude of about 48? N, certainly not Scotland. What is the true origin of this dial?
 
 
Washington District of Columbia USA Horizontal Dial 203
In the Bishop's garden is a weathered 13th C. capital on which sits a 41 cm diameter horizontal brass dial. It is engraved with "Tho Heath, London" and the year 1712. On the noon line is the indication "Hammersmith", a location on the (then) outskirts of London at 51:30N 0:14W. Heath is one of the Grocers' Company mathematical instrument makers Many of Heath's dials have a coat of arms.
 
 
Washington District of Columbia USA Vertical Dial 202
Vertical dial with bronze Roman numerals and trefoil pierced gnomon on square sandstone. Dial is on south facade over main entry, facing East Capitol Street. School is dated 1923. Elevation above entrance is approximately 30 ft. making dial hard to read. Large projecting towers place dial in shadow in early morning and late afternoon. Similar to McKinley High School dial (#207).
 
 
Black Forest Colorado USA Analemmatic Dial 201
Analemmatic dial in yard about 20 ft. across. Contact Science Outreach Center, 11445 Teachout Drive, Black Forest CO 80908
 
 
Pueblo Colorado USA Stonehenge Dial 200
Stonehenge type dial designed by Judy Guttormsen and built in 1984 . Stonehenge itself an amphitheater. If you stand on a brass marker in the center of the stage, on the solstices and equinoxes, you can observe the rising and setting of the sun aligned with metal posts viewed through slits in the wall. At the south edge of the site is a 6 foot horizontal dial laid out in the concrete floor. There are two rings of numbers, one for standard time, one for daylight time. Not corrected for longitude, but the location is very close to the center of the time zone. The gnomon is cement and is unusually thick (approximately 40 cm), making it very sturdy, presumably to prevent vandalism. The surface of the gnomon is very rough, having embedded pebbles, making it an uncomfortable place to sit or climb. The metal inscription plate on the gnomon has faded too badly to read. The site also has a North Star finder made of wrought iron and has a small bench for children to use.
 
 
Ann Arbor Michigan USA Vertical Dial 199
A stone and bronze vertical dial approximately 10x6 feet just below the roof of the Mack School. Dial face includes Roman numerals showing Eastern Standard Time and a polar gnomon. Inscription appears below gnomon.
 
 
Calgary Alberta Canada Analemmatic Dial 197
Stone analemmatic dial designed by Kasian Kennedy. Dial is laid out in a circle. Monthly markers designate where observer is to stand to act as the gnomon. Both standard and DST hour marks included.
 
 
Wooster Ohio USA Horizontal Dial 196
Brass or bronze Gift to the College from the Class of 1907. On S side of gnomon, an embossed figure, possibly Father Time with scythe. Mounted atop a carved stope base with motto, "United in time, parted in time to be reunited when time shall be no more."
 
 
Edmonton Alberta Canada Horizontal Dial 195
A horizontal dial of varnished wooden shaped as octagon, perhaps 24 in. across, 2 in. thick, with very thick wedge-shaped gnomon. Roman numerals carved at ends of hour lines. Dial sits atop a segment of tree trunk.