Sundial 643
- Dial City: Pasadena
- Dial State/Province: California
- Dial Country: USA
- Lat: 34° 8.217' N
- Dial Nr: 643
- Dial Type: Analemmatic Dial
- Dial Access: Public
- Lon: 118° 7.417' W
- Dial Owner: California Institute of Technology and Caltech Alumni Association
- Dial Designer: Dial design by Bob Kieckhefer and Ponzy Lu; graphic design by John O'Brien
- Dial Maker: John O'Brien and Mike Gilbert, Inc.
- Dial Date: 8-May
- Location:
- California Institute of Technology Pasadena, California South of Winnett Student Center
- Description:
- A 14x8 foot analemmatic dial with an 8x2 foot gnomon-positioning calendar plinth. The dial is installed in the pebble and concrete patio of the Winnett Student Center. The hour markers and calendar line plinth are made of Granodiorite of Knowles, a muscovite-bearing biotite granodiorite rock quarried from Knowles Quarry at Raymond, California. A nearby wall plaque provides longitude and EOT correction. The dial is a gift from the Caltech Alumni Association as a sculpture, a public artwork and a scientific instrument. This dial is located on the private university campus but the public may walk on the campus grounds to view the dial.
- Inscription:
- CALTECH ALUMNI ASSOCIATION
- Dial Links:
- http://alumni.caltech.edu/sundial
- Other References:
- Construction photos by Elizabeth Allen
- Aerial photos and plaque photo by Robert Wedemeyer
- Rock description by Paul Asimow
Last Update: