Other pole-style dials
Bob Terwilliger's jacuzzi, Coconut Grove (Florida, USA)
Sundials can be laid out on any surface, as Bob Terwilliger demonstrated. He built the trigon, a smart laser pointing device, to simulate the sun's position and trace hour and date lines. His 'arbitrary' object was an abandoned jacuzzi, which withstood the harsh Florida climate for another three years.
Website: Bob Terwilliger's Shadow Garden
Location: 25.7° N, 80.2° W
Design: Bob Terwilliger
Inauguration: April 1997, demolition: April 2000