|  | Richmond   | Sundial: 173 | 
  | State/Province:  Virginia | Country:  USA | 
  | Dial Type:  Obelisk or Vertical Gnomon | Condition:  Good | 
  |   | Latitude and Longitude: | 37° 30.000' N  77° 30.000' W | 
  | Location: | 
  | Science Museum of Virginia, 2500 W. Broad St. 
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	| Description: | 
	| 'Built in 1981 after an article in Scientific American (Dec 1980 "The Amateur Scientist") described a computer program for building a gnomonic dial with analemma hour lines. The dial was painted on the museum's parking lot, using a ball atop a 25 ft aluminum flagpole as the nodus. Semi-annual analemmas were painted in different colors, allowing correction for the equation of time. The dial was refurbished June 1992.
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General Information: | Inscription: | Owner: Science Museum of Virginia
 | Instructions for use, along with Lat/Lon of dial
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	| Builder: William U. Walton, SMV staff member 
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| Construction Date:  1981 renovated 1992
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| References: | Web Links: | 
| Scientific American, Dec, 1980 'The Amateur Scientist'
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Last Revised: 2019-07-20 17:02