Re: sundial for the blind

[Sara Schechner]

Yes, I did have a modified sunshine recorder in mind, but with the touch 
band not right at the focus of the sphere but adjacent to it--for the 
reason you specify (risk of burns).  It also occurred to me that a small 
sphere might not focus too much light.

I need something that will work in a wide range of temperature.  Summers in 
Boston get up in the 90s and even over 100 degrees F.  Winters are can be 
at 0 degrees F, but then again the sundial is likely to be covered in 
snow!   The Zeist dial mentioned by Fer is interesting in its use of a 
photovoltaic cell.

Thanks for the reference to the dial in Regents Park.  Please send me 
directly the image in larger format.

Best,
Sara

-