[Elecraft] ESD mat measurements

[WILLIS COOKE]

Al, the explanation could be that the sauce pans are not machine flat, thus have a much smaller contact area than their measured diameter would indicate.  A machined flat surface with the mat sitting on a very flat surface would probably yield much different results.  Trying to make laboratory accurate measurements with jury rigged apparatus sometimes yields poor results. 

Willis 'Cookie' Cooke 
K5EWJ