National Institute of Standards & Technology. Inner courtyard
 
Description:
Briggs Commemorative Sundial. One of the more complex and elaborate ones in the US. The dial plate lies parallel to the earth's axis of rotation. The dial has three gnomons. The upper and lower point out Eastern Standard time, the middle one indicates local apparent (solar) time throughout the year. A copy of the brochure is in the NASS Archives.
 
General Information:
Owner: NIST
Designer: R. N. Mayall
Builder:
Construction Date: 1948, August 13
 
References:
Mayall, photo p.110, description, p.232-33.
Commemorative Sundial brochure published by NIST.