On 6/10/06, james tornes <james.tornes@gmail.com> wrote:
> A guy giving a presentation to us was looking at various motherboards
> and making assesments like "this is a 4 layer board", "that one is 6
> layers". Can someone actually differentiate with an average eye,
> between boards with 4 layers and 6 layers? Thickness of boards can
> vary a bit even in-between runs so what's the technique here?
>
> Jim

I think 2-layer and 4-layer board are easier to differentiate but I have
no experience with 6-layer board. Maybe the guy has seen so many
board so that he can look through the PCB... Sometimes experience
can really be amazing...

Regards,
Xiaofan
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