I suggest you contact Cyber Optics in Minneapolis.
They have a line of laser profilometers with sub-micron resolution.

Cyber Optics Corp
5900 Golden Hills Drive
Minneapolis, MN 55416
1-800-746-6315

> -----Original Message-----
> From: Debbie Kenney [SMTP:[log in to unmask]]
> Sent: Tuesday, May 26, 1998 2:28 PM
> To:   [log in to unmask]
> Subject:      [TN] Coplanarity for chip assembly
>
> >  As a manufacturer of flex circuits, pad coplanarity has become a
> > major issue for us when our customers assemble the chip onto the
> flex.
> > We are in dire need of information on sources and equipment
> available
> > that can measure coplanarity of copper pads. Is laser or optical
> > better?
> >
> > Any help and / or ideas are greatly appreciated.
> >
> > Debbie Kenney
> > Disk Drive Division
> > M-Flex
> > [log in to unmask]
>
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