Sundial 664
- Dial City: New Haven
- Dial State/Province: Connecticut
- Dial Country: USA
- Lat: 41° 19.977' N
- Dial Nr: 664
- Dial Type: Cylindrical Dial
- Dial Access: Public
- Lon: 72° 56.810' W
- Dial Owner: Southern Connecticut State University
- Dial Designer: Howard Hebel (Herman S. Newman & Partners), Fred Sawyer (NASS)
- Dial Maker: Promoco Manufacturing Co. and other contractors
- Dial Date: 2005
- Location:
- Southern Connecticut State Univ. 501 Crescent St. New Haven, CT Engleman Hall Rotunda entrance
- Description:
- A nearly 50 foot tall vertical concave cylindrical projection dial of precast concrete lined with aluminum panels and with an aluminum band projection gnomon. The curvilinear interior surface is inscribed with vertical hour lines and horizontal solstice and equinox marks. The band gnomon features a 2.5 inch diameter hole that projects an image of the sun on the silver-colored interior surface against a shadow cast by the gnomon band itself.
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