| As I remember 2.5 was outer diameter and 2.4 was inner - and that is the given standard.  I thought the situation was settled.
 
 
   "I may not know much, but I know the difference between chicken shit and chicken salad."  Lyndon Johnson 36th U.S. President Esquire Rule 72: "Driving fast, doesn't mean you're a great driver; but great drivers occasionally drive fast!"
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