Sundials - World's Oldest Clocks

North American Sundial Society

Selected Sundials of North Carolina

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Marshall North Carolina USA Equatorial Dial 642
An armillary steel ring equatorial dial approximately 4 feet diameter. Hour ring has Roman numerals cut through the ring to show EST. Mounted on a concrete pedestal marked with city name and builder's mark. The pedestal is also marked with Marshall town map coordinates 35.79° N, 82.68° W, which are not the precise coordinates of the dial. Weathered finish is green enamel paint on steel. The concrete pedestal is marked with Marshall city name, builder's mark and approximate coordinates.
Maryhill Washington USA Stonehenge Dial 241
180' across Reinforced concrete Duplicate, as nearly as possible original size and design of the original. Outer circle of 30 16' pillars, inner circle 40 pillars 9' high. Build by Sam Hill as a memorial to servicemen of Klickitat Co. Washington who died in WWI. 3 page description in envelope.
McDonald Observatory Texas USA Horizontal Dial 771
A monumental horizontal dial on a cast concrete base with a 5 foot high polished granite gnomon. Hour lines radiate from the gnomon root and hour markers with Arabic numerals are placed on a square about the gnomon. Instructions for reading the dial are engraved on the side of the gnomon.
McMinnville Oregon USA Vertical Dial 133
8 x 6 ft Stainless steel and copper The hour lines project beyond the dial face, which is mounted about 12' out from the wall and cast digit-shaped shadows on it. Thus both the hour-lines and stile line are shadows. The dial is mounted on the south face of a tower, structurally an elevator shaft. The bronze plaque at the base contains the inscription.
Meadville Pennsylvania USA Horizontal Dial 905
The sun dial was given to the college in 1909 by the Class of '99 as a memorial on their tenth anniversary. It consists of an elegant bronze dial showing time from 6am-6pm delineated in 15 minute increments. Hours are shown in Roman numerals. The gnomon has the number "99" beneath the style. The dial is mounted on a granite pedestal forty inches in height.
Meadville Pennsylvania USA Horizontal Dial 906
This patina dial shows lots of wear. Although it sits on an elegant helical pedestal. The dial has a compass rose and from measurements of both the dial and gnomon, it was constructed for London at 51 degrees. This is further supported by the hour extent from 4am to 8pm. The hours are delineated in irregular 5 minute marks with hours shown as Roman numerals. The 6am to 6pm hour lines should be exactly opposite, but are angled toward the gnomon foot. Unfortunately this dial never kept good time in London and certainly can not tell accurate time in Pennsylvania.
Medicine Hat Alberta Canada Equatorial Dial 495
The Medicine Hat equatorial sundial was commissioned by the Rotary Club of Medicine Hat to commemorate its 50th anniversary (1918-1968). This is an Erickson equatorial polar dial. The dial is 6 feet 9 inches in diameter, made of pink granite, and weighs 3450 pounds. The dial is supported by an inclined stainless steel gnomon rod 3 inches in diameter, with overall length just over 6 feet. As with many of these dials, there are two equation of time plaques.
Merida Yucatan Mexico Vertical scratch Dial 537
A south-facing meridional vertical or scratch dial with horizontal gnomon and located on the roof at the front of an early church monastery cloister. The stone dial is approximately 3 feet square. The north face is similarly inscribed. This is among the earliest sundials in North America.
Merida Yucatan Mexico Equatorial Dial 538
Generally identified as an equatorial, this stone cylindrical cavity dial uses the extremities of the semicircular dial plate as two independent styles. The dial face is marked with six equally-spaced hour lines with minor subdivisions. The east style casts the 6 AM to noon shadow while the west style casts the noon to 6 PM shadow. No construction date is give but is likely 18th century or earlier.
Mesa Arizona USA Analemmatic Dial 801
This concrete analemmatic dial is set is a larger concrete plaza located in a City park with an overall theme of Sonoran Desert environmental education and nature-based play.
Mesa Arizona USA Equatorial Dial 302
Very handsome equatorial dial of bronze and marble, approximately 50 in. diameter. Sits on a triangular base atop marble pedestal 39 in. x39 in. x24 in. high. Inside brick-walled enclosure about 21 in. square.
Mexico City Distrito Federal Mexico Horizontal Dial 453
A triangular based horizontal dial with a triangular moat. The outer triangular sides are approximately 12 feet (4 meters). The dial and moat are built of concrete, with an aluminum or sheet metal gnomon about 150 cm. On the dial are metal pyramids to indicate hours. The sundial was donated by the Tecnologico de Monterrey University.
Miami Florida USA Vertical Dial 785
An east-declining vertical dial near the top of a stone winter residence building, now a museum. Dial face includes hour lines and Roman hour numerals for 5 AM to 3 PM. Building and dial were built in the early 1900s but gnomon appears to be in good condition without corrosion so it may be bronze. Dial includes a depiction of a scroll with engraved Latin inscription.
Miami Florida USA Analemmatic Dial 573
A 16 foot diameter analemmatic dial of broken mosaic tiles. The numerals, months and lines are made with broken colored tiles. The major axis is 10 feet. A movable vertical gnomon is available for increased reading accuracy but a standing child is the usual gnomon. The colored number tiles are white for DST and black for ST.
Middletown Connecticut USA Vertical Dial 922
This 6 x 6 ft. bronze, vertical sundial faces directly south on the curved sandstone wall of the Observatory. This dial was fabricated of Muntz metal bronze that received a hot applied green patina to compliment the brown sandstone color of this 1916 university observatory. Because of its large size, the metal dial weighs 650 lb. The hour numbers and lines are raised and applied to the surface of the dial. The Roman hour numbers that surround the dial plate in a frame take their shape according to the hour angle. Declination lines of the solstices and equinox are marked by the triangular gnomon shadow tip. The dial includes a built in longitude correction to show solar time for the time zone meridian. On a nearby wall below the dial, a plaque features an analemmatic graph for the equation of time correction to get clock civil time.
Milton Massachusetts USA Vertical Decliner Dial 92
A vertical south facing dial made of painted mahogany with an aluminum gnomon. The dial is in the shape of a shield 3 foot tall by 2 1/2 foot wide, following the seal of the Milton Academy. Around the edge are the hours in Roman numeral. An Equation of Time correction table is now missing, but does not detract from the beauty of the dial.
Milwaukee Wisconsin USA Vertical Dial 841
This large vertical south facing sundial is fabricated from aluminum. Eight slender hour lines delineate the time. At the top of the hour lines along the winter solstice are acrylic numbers on the circular hour plates showing time from 10am to 5pm. At the bottom of the hour lines along the summer solstice are additional acrylic numbers showing daylight saving time from 11am to 6pm. A short horizontal bar shows the equinox.
Milwaukee Wisconsin USA Vertical Dial 381
A direct south cast or wrought iron vertical dial on a brick building.
Monegaw Springs Missouri USA Compass Dial 888
This compass is carved in rock showing cardinal points. For some reason the N mark is backward and a W mark is upside down. A surrounding circle of 10 inches in diameter defines most of the compass. A smaller circle encompasses the letter N and a partial circle carved from the center is approximately 4 inches in diameter.
Monterrey Nuevo Leon Mexico Equatorial Dial 488
This equatorial dial is just over 3 m in size, made of iron. Along the equatorial band are twelve Roman numerals to indicate apparent solar time and twelve Arabic numerals to indicate standard time. The outside of the equatorial band has zodiac constellations. There are also solstice and equinox discs at the gnomon. There is a plaque for the equation of time and an explanation of time corrections next to the sundial. The dial sits on a 1 m high stone base.