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Re: Groove diameter

Posted by Dick Hosmer on Wednesday, 13 August 2014, at 10:50 a.m., in response to Re: Groove diameter, posted by Duane Spyer on Wednesday, 13 August 2014, at 9:39 a.m.

This has come up before and I still say (which no one has seriously challenged) that, since the TD has lands and grooves of EQUAL width, a regular mike will span from high point to high point and give a proper - or VERY close - reading. One must be sure to have jaws centered on an edge, of course.

The same would NOT be true of other 3G, or ANY 5G systems, so there is plenty of validity for the need of a special mike - it just does not, IMHO, apply to the TD.


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