temp change=how much pitch change?

[John M. Formsma]

That would be good to know. What was his name and about when would the 
post have been made?

JF

Andrew and Rebeca Anderson wrote:
> My late mentor did some measuring.  S&S D tuned to 441hz at A4 under a 
> single light was just under 440 hz under full stage lighting.  I'd 
> have to dig in the archives but he had a Fahrenheit to cents ratio 
> with in normal tuning tensions.