National Institute of Standards & Technology. Inner courtyard
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.
Designer: R. N. Mayall
Construction Date: 1948, August 13
Mayall, photo p.110, description, p.232-33.
Commemorative Sundial brochure published by NIST.