A height check with a .0001 indicator and a rectangle gage block.
----- Original Message -----
From: "Franklin D Asbell" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, January 30, 2003 2:18 PM
Subject: Re: [TN] Calibration/Verification of granite-surface block
> 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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