How small a hole can you view. Thanks Steve Kelly

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Franklin D Asbell
Sent: Tuesday, September 05, 2000 1:26 PM
To: [log in to unmask]
Subject: Re: [TN] Non-destructive Thru-hole Inspection


Dave,

A device we use that is quick and easy is a PCB through hole eyepiece (kind
of ironic, yes...~grin~) Sometimes called a prism eyepiece. Any supplier of
optical devices for
electronics should be able to direct you to a source. This device uses a
prism lens that splits the through hole into 9 images each a an oblique
angle for viewing the holl
wall. It's a real quick way to confirm hole wall quality.

Franklin D Asbell
Network Circuits, Inc.
Irving, Texas 75061


Dave Kell wrote:

> We are looking for a way to look inside plated through holes to check the
electroless plated deposit for voids prior to electrolytic. Possibly a fiber
optic video scope?
>
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