New York
| |
 |
Syracuse |
New York |
USA |
Armillary Sphere |
Dial 382 |
| A 10 foot 2 inch diameter armillary sundial made of black anodized steel. The equatorial band is created by two narrow bands holding in open space 10-inch gold colored Roman numerals to grace each hour from 6am to 6pm. The gnomon is a traditional rod with gold arrow and tail flute. The armillary has arctic and antarctic circles, and a prime vertical that extends only to the horizon circle. The prime meridian has 12 gold flowers spaced every 30 degrees. The dial weighs about 8000 lbs and sits on a small concrete base. |
| |
| |
 |
Taos |
New Mexico |
USA |
Horizontal Dial |
Dial 493 |
| A copper and bronze horizontal dial about 15 x 15 inches. The dial was built by the Rocky Mountain Youth Corp, an organization the helps direct the energies of "at risk" youth. Base of dial is clad with 2x4 inch glazed tiles made by all the 5th graders in town. There is a compass rose around the base and on dedication day, an area of wet cement was available those present to make an inscription or hand print. |
| |
| |
 |
Tempe |
Arizona |
USA |
Horizontal Dial |
Dial 23 |
| A horizontal dial from Picture Rock Sandstone with 24k gold-plated inlaid brass fittings, 25 inches wide by 36 inches long, with gnomon 12.5 inches high. Gnomon is 1.5 inches thick. Total sundial weight 110 lbs. |
| |
| |
 |
Tempe |
Arizona |
USA |
Equatorial Dial |
Dial 75 |
| An equatorial dial designed by R. Newton Mayall with a "curved triangular gnomon over a curved face approximately 1ft. wide. Tells the day of the year and standard time noon." Has a plaque explaining the Equation of Time. |
| |
| |
 |
Tenango de Doria |
Hidalgo |
Mexico |
Vertical Dial |
Dial 459 |
| A very striking vertical reclining dial 85 x 115 cm created from hand painted tiles, each individually fired in a kiln and assembled at Tenango de Doria by David Canyedo. In addition to hour lines, the dial includes declination lines for the solstices and equinox. The dial includes constellation maps of both the northern and southern hemispheres, a celestial sphere, and rose of winds (compass). The artistry also includes NAHUI OLLIN (the fifth sun which is the era we are living in according to the Aztecs). The dial has an equation of time that allows conversion from local solar time to standard time. The dial was designed to arouse interest of high school students in astronomy. |
| |
| |
 |
Terre Haute |
Indiana |
USA |
Sun Alignment |
Dial 586 |
| Via Solaris, a 20x15x4 foot granite, stainless steel and bronze calendrical dial showing yearly equinoxes and summer solstice. |
| |
| |
 |
Terre Haute |
Indiana |
USA |
Horizontal Dial |
Dial 685 |
| A round bronze horizontal dial with 6 AM to 6 PM hour lines and half-hour lines and Arabic hour numerals. Eight perimeter points and the one central decorative point may represent alignments but no explanation is given. Dial sits on a carved stone column. Base marked 1920 1921 1922 1923. |
| |
| |
 |
Terrel |
Texas |
USA |
Armillary Sphere |
Dial 1049 |
| When is a sundial not a sundial? At first glance it appears to be an armillary sphere, but upon closer inspection, it is missing both a gnomon rod and an equatorial ring to mark the hours. Then, in another view of the dial we see that the angled ring with spokes actually contains hour numbers and could be the missing equatorial ring. Further, it a rod had been attached perpendicular to the ring, and the ring were tilted to the co-latitude, we'd have a working armillary sundial. The missing gnomon rod may have fastened to the meridian ring. Bottom line: with some care, this sundial can be saved and become a working sundial again. |
| |
| |
 |
Thunder Bay |
Ontario |
Canada |
Analemmatic Dial |
Dial 466 |
| A very well constructed analemmatic dial about 24 by 11 feet. The dial may be difficult to find, since it is in the center of a field that is devoted to wild grass of the area. Cement markers are used to show the hours and for the central base showing the months where to stand. The hourly markers are corrected for the longitude of Thunder Bay. The site is visited quite frequently by school children and is a great educational tool for dialing. |
| |
| |
 |
Toledo |
Ohio |
USA |
Equatorial Dial |
Dial 621 |
| An equatorial projection dial 18 inches wide atop a 3 foot high fluted steel column. Located on the Anthony Wayne Trail Bridge inside the zoo near its entrance, access requires zoo admission. Dial sits atop a three foot high fluted steel column. |
| |
| |
 |
Toms River |
New Jersey |
USA |
Horizontal Dial |
Dial 507 |
| A horizontal dial about 22 feet in diameter. The dial base is stone and gravel outlined in shore juniper plants. Treated lumber, now gray through weathering, is used for the both the hour lines and the marking Roman numeral hours. Nicely fashioned with a hub of green junipers in the center surrounding a simple wood gnomon. Builder Richard Perez started off just wanting something a little different?and the sundial emerged in 1992 as the main theme of landscaping. |
| |
| |
 |
Toronto |
Ontario |
Canada |
Horizontal Dial |
Dial 596 |
| A 210 cm diameter horizontal dial of blue granite with a 56 cm high stainless steel gnomon. In addition to showing local time, the declination line that touches the base of the gnomon traces the path of the shadow on June 23 (date of the 1985 Air India terrorist-bomb air crash) and also marks solar noon at the crash site near Akahista, Ireland where there is a similar memorial sundial. Stones forming the pedestal represent all of the Provinces and territories of Canada, and the countries of India, Ireland, Japan and the United States of America. |
| |
| |
 |
Toronto |
Ontario |
Canada |
Equatorial Dial |
Dial 364 |
| The face of this equatorial dial is an arc of a sphere 2 meters in diameter. A nodus on the polar gnomon casts a shadow indicating solar declination. Aligned with the dial is a 15 meter meridian line which passes through the site of the transit instrument of the former Toronto Observatory. |
| |
| |
 |
Toronto |
Ontario |
Canada |
Armillary Sphere |
Dial 413 |
| Armillary dial about 4 foot in diameter. Gnomon rod appears to be missing. Raised Roman numbers show the hours from V in the morning to VII at night. Equatorial strip is about 6 inches wide. |
| |
| |
 |
Toronto |
Ontario |
Canada |
Equatorial Dial |
Dial 414 |
| An equatorial dial with rod gnomon bent into a half analemma. Raised Roman numerals along the equatorial arc from V in morning to VII at night. The gnomon is held by semi-circular arc with pleasing proportions that match the equatorial arc. |
| |
| |
 |
Toronto |
Ontario |
Canada |
Horizontal Dial |
Dial 433 |
| A striking 30 inch diameter horizontal dial. The equation of time correction is made by a slight rocking of the gnomon about the polar axis, controlled by a manual date index and a hidden cam mechanism. At the south end of the gnomon on the dial is a sunburst design. The octagonal pedestal is ornately covered with six copper plates. Each showing two zodiac signs in relief, forming a frieze 20 inches high around the pedestal. |
| |
| |
 |
Toronto |
Ontario |
Canada |
Horizontal Dial |
Dial 435 |
| A small bronze 8 inch diameter horizontal dial, sitting upon a granite column of equal diameter. The dial plate has simple radiating hour lines and Roman numerals. No minute or quarter hour marks. The gnomon may have broken off at some time and been repaired, since it is now held on by a rather unsightly bronze angle iron. |
| |
| |
|
Toronto |
Ontario |
Canada |
Horizontal Dial |
Dial 128 |
| Approx 55 ft square Stone (concrete?) 4AM-8PM marked in Arabic numerals, half and quarter hours marked with lines. A huge dial. The gnomon is sunk below the outer level by a series of steps. The hours are marked by stone slab 'seats' spaced around the outer square. There are two seats at the noon position to allow for the width of the gnomon. This dial no longer exists. |
| |
| |
 |
Torre |
Coahuila |
Mexico |
Analemmatic Dial |
Dial 509 |
| An analemmatic dial with major axis of 18 feet built of many different types of stone from the Torre?n Jard?n area, including white and red marble, travertine, yellow and black flagstone, and limestone. Insets of gray stone hold the hour markers from 5am to 7pm. The finished dial has been set in desert plants, native to the region, including: Candelilla, Gobernadora, Lechuguilla, Sangre de drago, Huevo de toro, Biznaga, Pitaya, Corona de espinas, Nopal rastrero, and Cardenche. These are all protected desert species. The dial has a compass rose and six disk-shaped maps at the east and west sides to show the course of sunrise/sunset across the Mexican Republic on the solstices and equinox. |
| |
| |
|
Torreon |
Coahuila |
Mexico |
Vertical Dial |
Dial 487 |
| This is a stone cube 3.5 m high with four vertical dials. Each dial face is about 2.2 m high by 1.25 m wide The South and North faces have Arabic numerals to indicate solar time from 6am to 18hrs, with marks every 15 minutes. The East face has numerals from 6am to 12pm and the West face complements from 12pm to 18hrs. These faces have half hour marks. The South face has seven declination lines, constellation dates, analemma line, zodiac symbols, and equinoctial and solstice lines. A curve to indicate light and shadow hours all the year is on each face. A square base on quarry. At the north-east corner are the carved names of the designer Miguel Bertran de Quintana and builder Cirilo Nunez.
Note: because of the sundial size and latitude, it was necessary to extend the four vertical faces of the sundial into the horizontal plane to indicate the summer solstice line and 11:30 and noon hours of summer. |
| |
| |
 |
Towson |
Maryland |
USA |
Horizontal Dial |
Dial 334 |
| A bronze horizontal dial made inscribed "1715". About 10 inches in diameter with an ornately decorated dial plate.
The original gnomon has been removed and a modern garden sundial placed over the original dial face; little of the original face is visible. The dial is on a square stone that sits atop a plane square cut stone pillar. |
| |
| |
 |
Traverse City |
Michigan |
USA |
Analemmatic Dial |
Dial 494 |
| This beautiful analemmatic dial was built as part of the American Society of Landscape Architects' 100 years/100 Parks project. A colored concrete pad was poured on the north/south axis and scored joints for each month. Stainless steel plates show the name of the months. On either side of the concrete pad are dry laid flagstones with creeping thyme in the joints. Hour markers are 12 inch diameter colored concrete bases with numbers cut from stainless steel. A stained glass sun plaque at the top of the month axis was made by a local artisan. Total dial size is about 10 x 20 feet. |
| |
| |
 |
Trois Rivieres |
Quebec |
Canada |
Vertical Dial |
Dial 66 |
| A declining vertical dial approximately 6 feet wide and 8 feet tall of painted wood. Diol declines 58? west of south. Dial includes a two-lined analemma noon mark that shows noon corrected for EOT. Hour lines with Roman numerals show local time from 10 AM to 7 PM. Dial is located about 30 feet high on a wall, above an alcove with a statue of the Virgin Mary. The gnomon length is correct for the shadow of the tip to fall on the noon mark. Dial furniture includes a lunar crescent and a depiction of a beaver carrying a tree branch, in a classic French tradition and similar to dials of Zarbula's overall design. |
| |
| |
 |
Tucson |
Arizona |
USA |
Equatorial Dial |
Dial 4 |
| A bronze equatorial dial approximately 2 ft. in diameter designed by R. Newton Mayall. Mayall stated, "When I was asked to design the sundial in front of the Museum at Kitt Peak I was more than pleased, for it gave me a chance to work a semblance of astronomy into it. The design reflects the great telescope nearby, with its base and fork type mounting, the dial itself being the "telescope"." |
| |
| |
 |
Tucson |
Arizona |
USA |
Sun Alignment |
Dial 11 |
| A "Stonehenge" or sun circle dial designed by Chris Tanz, Susan Holman, Paul Edwards and with the help of Will Grundy and sponsored by the Pima County Flood Control and Transportation Dept. The structure uses a broken circle of walls to create designs made of light based on the movement of the sun. The circle, 50 feet in diameter with 8 foot walls is modeled loosely on the Casa Rinconada kiva ruins in Chaco Canyon, N.M. The walls are of integrally colored concrete block, concrete, and flagstone. Lines on a bronze plaque indicate north and south and the direction of sunrise and sunset on the equinoxes and solstices. Holes in the wall do the same. Solar noon is marked when sunlight comes through a slot in the South wall and passes a line on the floor. |
| |
| |
 |
Tucson |
Arizona |
USA |
Horizontal Dial |
Dial 12 |
| This concrete and adobe brick horizontal dial is approximately 8 1/2 feet in diameter with a triangular gnomon 25 x 32 inches. This is a large, but very plain sundial except for the shiny chrome plated gnomon. It lacks numerals, but has hour points and shows the cardinal points. The dial is corrected for longitude. The pedestal is missing some bricks and is adorned with graffiti. |
| |
| |
 |
Tucson |
Arizona |
USA |
Horizontal Dial |
Dial 14 |
| A 25 inch circular engraved horizontal dial in a large irregular stone. Surrounding the dial on the stone are zodiacal signs and a beautiful engraved drawing of the surrounding mountains. The designer, John Carmichael, calls these dials "horizontal string heliochronometers" since the gnomon is a brass cable held very straight under tension from a heavy counterweight which is suspended from a brass hinged lever. |
| |
| |
 |
Tucson |
Arizona |
USA |
Sun Alignment |
Dial 1039 |
| The Vista Sun Wheel is 63 feet [19.2 m] outside diameter and 197 feet [60 m] in circumference. The Wheel is composed of 28 tons of broken limestone. The central cairn is 11 feet [3.4 m] in diameter and 3 feet [1 m] high. In the center is a post marked by a sandstone block about 30 inches [76 cm] tall. The floor of the Sun Wheel called for another 28 ton of crushed decomposed red granite about 3/4 inch [2 cm] thick. Stone spokes indicate the solstices and equinox. Other stones 30-40 inches [75-100 cm] are set to various alignments outside the ring. A post indicates the setting sun on Groundhog Day, indicating one of the cross quarter days. The layout was made by direct observation, watching the progress of the sun along the horizon to solar standstill then return. 18 months were required to observe, mark and verify positions then setting stone and making the ring. The layout is similar to the Bighorn Wheel in Wyoming. |
| |
| |
 |
Tucson |
Arizona |
USA |
Analemmatic Dial |
Dial 825 |
| This nearly 14-foot wide analemmatic human sundial replaces the previous sundial at the same location. The previous dial by an unknown designer had several design errors and was in poor condition. The Flandrau Planetarium replace it, choosing a sundial with a blue background and white hour numerals. Dial Markings include quarter hour marks, Solar Noon Mark, Date Line with one week marks, Alignment Marker for Sunrise and Sunset (Bailey Points) with Solstice and Equinox lines, and the four Cardinal Points of the compass. The dial has a built-in longitude correction and shows Mountain Standard Time when readings are adjusted for The Equation of Time |
| |
| |
 |
Tucson |
Arizona |
USA |
Vertical Dial |
Dial 456 |
| This is a 10 x 10 foot south vertical wall dial with hour lines painted on the wall that are corrected for longitude. A unique feature of this dial is the time scale can be rotated forward or back slightly to compensate for the Equation of Time. However, because only the hours are marked, precise minute reading is difficult. Welded steel was used to make the time marker ring and gnomon. |
| |
| |
 |
Tucson |
Arizona |
USA |
Horizontal Dial |
Dial 464 |
| A horizontal sundial 45 x 61 inches with a monofilar brass cable gnomon and tension counterweight. This is the largest horizontal sundial in the US carved on a single piece of stone, taking two years to build. The dial has hour lines from 5am to 8pm, corrected for longitude. Each hour line has an analemma and in the lower right of the dial is a graph of the Equation of Time. A nodus on the wire gnomon indicates date, with declension lines for summer and winter solstice, equinox, and date lines. Time and direction of sunrise and sunset are marked on the equinox and solstice lines. At the base of the gnomon is a 16-point compass rose. On the left side of the dial is a table for telling time by moon shadows. In the center is a copy of the hands from "The Creation" by Michelangelo. |
| |
| |
 |
Tucson |
Arizona |
USA |
Horizontal Dial |
Dial 465 |
| A simple square horizontal dial 20 x 20 inches carved in a 3 inch block of granite with a bronze gnomon. The dial has hour lines from 6am to 6pm for local solar time. No graph or table for longitude and Equation of Time corrections. Dial sits atop a 3 foot square pedestal. |
| |
| |
 |
Tucson |
Arizona |
USA |
Vertical Dial |
Dial 533 |
| A declining vertical stained glass "Gecko" sundial 58 x 20 inches consisting of 153 colored glass pieces and exterior rod gnomon with triangular base. Paintings on 11 glass pieces use vitreous kiln-fired enamels and stains. Dial and four adjacent panels consisting of 540 glass pieces are set in bay window overlooking succulent garden containing additional sundials. Dial glass panel includes painting of a Tucson Banded Gecko stalking fly, a star field, sun face and solar noon mark. Dial declines 27.4? east of south. Contact owner John Carmichael to arrange viewing. |
| |
| |
 |
Tucson |
Arizona |
USA |
Vertical Dial |
Dial 544 |
| Four vertical dials on the faces of a 100-inch tall redwood cupola on the roof of a private residence. The 21-inch dial faces are kiln-fired porcelain on steel; the bezels and gnomons are copper. The dials are longitude corrected for MST. Three dials have solar noon marks. |
| |
| |
 |
Tucson |
Arizona |
USA |
Vertical Dial |
Dial 566 |
| A vertical 44x92 inch dial declining 4.53? east of south painted on the rough textured stucco wall of a private home. The 2x4 inch tall conical horizontal gnomon is gold plated brass. The dial face is hand painted with elastomeric acrylic exterior house paint. The horizontal conical gnomon optimizes the nodus shadow at the location low latitude to show time and date. Dial face shows date/declination lines, solar noon mark and hour, 1/2-hour and 15 minute lines. To arrange viewing, contact owner Christina McVie. |
| |
| |
 |
Tucson |
Arizona |
USA |
Vertical Dial |
Dial 579 |
| Located on a side street wall of a private home, this 4x6 foot due south vertical dial uses welded iron numerals and gnomon. Built in 1954, this is the oldest known sundial in Tucson. Designed using Mayall and Mayall's "Sundials" and described in detail in April, 1954 Home and Garden Magazine. |
| |
| |
 |
Tucson |
Arizona |
USA |
Vertical Dial |
Dial 711 |
| An 84x47 inch vertical dial declining 18? east of south on the outside wall of a private residence. Roman hour numerals are on 8 inch square hand-painted ceramic tiles. The gnomon and support are welded wrought iron painted black. A hand painted EOT graph is shown on a matching ceramic tile.
This is a historic home designed by southwestern architect Josias Joesler. Homeowner found original architectural drawings showing a gnomonically-flawed sundial that was never installed and contacted John Carmichael to design this accurate new dial. |
| |
| |
 |
Tucson |
Arizona |
USA |
Globe or Hemispheric |
Dial 735 |
| A fused silica glass spherical lens projects a solar image spot onto the inner surface of a spherical segment of glass with a frosted area inscribed with hour lines and Arabic hour numerals. Time is read from the bright spot of light on the frosted surface while standing under the dial. Dial is mounted atop a pipe pillar on the patio of the Visitor Center. |
| |
| |
 |
Tuscaloosa |
Alabama |
USA |
Equatorial Dial |
Dial 189 |
| A 5 foot bronze and steel equatorial dial with pinhole gnomon in front of the North River Yacht Club. |
| |
| |
 |
Twin Falls |
Idaho |
USA |
Equatorial Dial |
Dial 839 |
| This beautiful stainless steel equatorial is approximately 1m in diameter with brass inlay for the equatorial time, divided down to the minute. This is also an analemmic sundial where the brass gnomon is cut out in the shape of an analemma allowing the user to directly correct for the equation of time. The analemma is marked with 365 individual date marks. |
| |
| |
 |
Ukiah |
California |
USA |
Horizontal Dial |
Dial 624 |
| A horizontal dial of welded steel plate using weld bead for hour lines and numerals. Marked for PST. |
| |
| |
 |
Union City |
New Jersey |
USA |
Horizontal Dial |
Dial 1113 |
| This beautiful sundial is 4 feet (122cm) sundial and made from two layers of 1.25 inch (3.1cm) thick hardened marble. Arabic hour numbers from 6am to 6pm, letters, and gnomon are 1/4 inch (6.35mm) brushed gold anodized aluminum. The gnomon is shaped as a slanting "P" and to the south of the dial center, the name "Pellarin". The dial sits on a 3-foot (1m) black marble cube. |
| |
| |
 |
Urbana |
Illinois |
USA |
Horizontal Dial |
Dial 289 |
| Horizontal dial 14 inches diameter, with 5 inch tall gnomon. Sits on stone pedestal 40 x 40 x 42 inches. |
| |
| |
 |
Vail |
Arizona |
USA |
Analemmatic Dial |
Dial 599 |
| A brass and concrete analemmatic dial set in the Butterfly Garden at Colossal Cave Mountain Park at 3415 feet elevation. The dial is 21 feet E-W across the hour markers. A hand-held rod gnomon 143 inches long includes a bubble level for positioning. There is a modest park use fee to view this dial. |
| |
| |
 |
Vallejo |
California |
USA |
Equatorial Dial |
Dial 235 |
| A 5-foot equatorial sundial with elegant time and meridian supporting arcs. The gnomon A 5 ft. aluminum polar dial. The gnomon has the profile of the Golden Gate Bridge. Time is marked in both standard and daylight saving time with Roman numerals. The dial was a gift from Vallejo's Sister city, Akashi, Japan. |
| |
| |
 |
Vancouver |
British Columbia |
Canada |
Hours to Sunset |
Dial 919 |
| This bright and colorful vertical dial declines west, showing "Hours to Sunset" (Italian hours). The dial is decorated in the colors of the rainbow, with a band of color for each hour left to sunset. Quarter hours are marked using thin white lines. The dial was commercially printed on 60 x 90 cm (24 x 36 inches) sheet of aluminum-plastic laminated material with a UV-protective coating. In the summer of 2023, the previous gnomon was replaced with a 3D-printed carrot, the tip of which acts as a nodus. The supporting structure is made from red cedar. |
| |
| |
 |
Vancouver |
British Columbia |
Canada |
Horizontal Dial |
Dial 920 |
| This is a 25 cm horizontal dial engraved on a 1/4 inch yellow metal plate (probably bronze). It shows local solar time. The hour marks look precise and consistent, but upon closer look are oddly arranged. The dialist attempted to shift the dial hour lines to correct for longitude (3.17 deg west). The AM hour lines are fairly accurate except the earliest hour lines (IV, V) which inconsistently meet the gnomon foot on the wrong side. The PM hour lines seem to mirror the AM lines except that 3 degrees had been added to each, rendering inaccurate time throughout the afternoon. The gnomon is slightly bent, and nearby buildings and trees block the dial at some times of day. The dial is decorated using simple geometric and visually pleasing patterns. Shallow engraving is used for the hour lines (making them a bit difficult to read), labels, and decoration. The gnomon has a bird engraved on each side and sits on a wedge base. The dial sits on a short granite pedestal with a polished top surface, and was commissioned by his parents in memory of Robert Carlyle Howard (born 1953, died 1970). |
| |
| |
 |
Vancouver |
British Columbia |
Canada |
Horizontal Dial |
Dial 925 |
| A delightful dial in a delightful setting, well worth the modest admission fee. It is an 18 inch patinated bronze disk mounted on an elegant white granite pedestal, with the hours adjusted to the time zone. The face is a finely crafted bas relief delineated in quarter hours, with the hours labeled using Roman numerals. The lower part of the dial shows the Arms of UBC, along with the leaves and flower spikes of a plant. In keeping with the medicinal purpose of a Physic Garden, the sculpted gnomon features a snake (a traditional symbol for a physician) entwined around a poison chalice (a traditional symbol for a pharmacist). A plaque on the pedestal dedicates the dial to Frank Ebenezer Buck, 1876 - 1970, UBC’s first Landscape Architect. The pedestal is from the 1920s, predating the dial, and was used elsewhere in the Botanical Gardens for their now-lost original sundial. |
| |
| |
 |
Vancouver |
British Columbia |
Canada |
Analemmatic Dial |
Dial 927 |
| The analemmatic sundial is laid within a 15-foot circle of light red concrete, set in the middle of a large grey concrete concourse on the south side of the school. Hour points are marked by 4-inch bronze disks embedded in the concrete; the declination scale is made of embedded tiles. The scale is red in part and blue in part, denoting the summer and winter periods. Correspondingly, each hour point hour is labeled twice; red for Daylight Saving Time and in blue for Standard Time. The dial incorporates a longitude correction for the time zone, and features Sunrise & Sunset Markers ("Bailey Points"). All labels were hand-painted by students - a deliberate measure intended to require occasional repainting and hence continued student engagement and involvement with the dial over the years. |
| |
| |
 |
Vancouver |
British Columbia |
Canada |
Equatorial Dial |
Dial 931 |
| A simple but elegant and well-executed bronze equatorial dial by renowned local sculptor Gerhard Class. It is about 24-inches in diameter and is mounted on a 16 x 16 x 36-inch plinth of nephrite jade, damaged at one corner. The gnomon has a central slit and can be rotated about the polar axis to create a narrow beam of light for precise reading of the sun's position. The dial shows local solar time plus one hour, corresponding to Daylight Saving Time. The dial's construction is technically perfect but, sadly, the dial appears to be misaligned with the gnomon axis pointing 7 deg west of north. |
| |
