Sundials - World's Oldest Clocks

North American Sundial Society

St. Louis  

Sundial 776
State/Province:  Missouri Country:  USA
Dial Type:  Equatorial Condition:  Excellent
Latitude:   38° 36.915' N Longitude:   90° 15.458' W
Location:
  • North side of Linnean House
    Missouri Botanical Garden
    4344 Shaw Blvd.
    St. Louis
 
Description:
  • A 10 inch wide, cylindrical-segment equatorial dial 8 inches high, fabricated from a section of large PVC pipe. The dial face is aluminum sheet bonded to the PVC pipe and marked by photochemical engraving with hour lines showing analemmas to correct for EOT; hour lines are corrected for longitude and show both standard and daylight saving Arabic hour numerals. Winter and summer solstices and equinoxes are marked. Time and date are read by the shadow of the intersection of the two gnomon rods. Instructions are included on the dial face and plaque.
 
General Information:Inscription:
  • Owner: Missouri Botanical Garden
  • "This sundial was designed, constructed and donated to the Missouri Botanical Garden by Dr. Ronald Rinehart to commemorate the Garden's 150th anniversary."
  • Designer: Ronald Rinehart
  • Builder: Ronald Rinehart
  • Construction Date: August 2008
 
References: Web Links:
  • See also the similar Rinehart Dial 047 in Heber City, Utah.

Last Revised: 8/4/2014 8:36:30