Hi Dialists:
 
Does anyone know anything about a sundial (heliochronometer) designed and built by Charles Avila and a Mr. Evans in the mid 1990's?  I think these were produced in Boston Mass. USA, and were featured in Sky & Telescope magazine in late 1994.  I am very curious about this design, but have had a very difficult time getting any information on these instruments, or if any still exist.
 
Any leads, ideas, or hints about where information could be obtained would be greatly appreciated.
 
 
TIA
Dave G. 
 
  

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