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January 2003

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Subject:
From:
Franklin D Asbell <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 30 Jan 2003 13:18:43 -0600
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We'll be using this one for the same purpose, do you calibrate in-house? If
so, what do you use to verify it...thanks...

Franklin


----- Original Message -----
From: "Mark Hargreaves" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, January 30, 2003 10:31 AM
Subject: Re: [TN] Calibration/Verification of granite-surface block


> Hi Franklin,
> Our granite surface plate is used strictly for warp & twist measurement of
> pcb's (very light use).  It's on our recall list.  The calibration is
rather
> expensive.  I was able to move from yearly cal to 3 year cal by
downgrading
> the plate from "A" (inspection grade) to "B" (shop grade, I believe) which
> is still well within our accuracy requirements.
>
> Regards,
> Mark Hargreaves
>
>         -----Original Message-----
>         From:   Franklin D Asbell [SMTP:[log in to unmask]]
>         Sent:   Thursday, January 30, 2003 10:57 AM
>         To:     [log in to unmask]
>         Subject:        [TN] Calibration/Verification of granite-surface
> block
>
>         Can anyone describe to me the method of calibrating/verifying a
> surface
>         block???
>
>         Also, in regards to calibration recall, would this need to be on a
> recall
>         list or would it be verify it once in it's lifetime, what would be
a
> cause
>         of initial calibration being voided...
>
>         Thanks,
>
>         Franklin D Asbell
>
>
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