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Richard Hess would probably be the expert on this if anyone is but when they talk about tape thickness, aren't they just talking about the backing material?  Or is the oxide layer too thin to be significant?

db

Sent from my iPhone

> On Aug 19, 2016, at 11:01 AM, Steven Smolian <[log in to unmask]> wrote:
> 
> What is the best method at reasonable cost of measuring tape thickness of a
> large number of  tapes?  I'm using a digital micrometer and getting results
> tat don't match the conventional .05, 1.0, 1.5 mil measurements.
> 
> Am I squeezing the jaws too tightly?  
> 
> 
> 
> Steve Smolian