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Re: [ATM] Dumb Question: how to measure a...



>
> Given a circle of glass, how can I measure it to characterize its
> circularity?   Assume I do not know where on the glass is the "center",
if,
> in fact a center exists.
>

For circle characterization; Geometric Dimensioning and Tolerancing ASME
Y14.5M-1994 standard. See:

http://en.wikipedia.org/wiki/Geometric_Dimensioning_and_Tolerancing   Also:
http://www.mcgill.ca/files/cden/GraphicsCommunications_Lecture-7.pdf





Don Clement

Running Springs , California

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