I've evidently confused this Thread with another one which had a picture of a
single point probe, approximately 0.125" in diameter,
and divided into 4-equal-quadrants each separated by about ~10-thousands of an inch.
My bad,
there are NO pictures in this thread.
The picture is still stuck in my head,
and I don't remember where it came from.
Thank-You Mr. Salts for pointing this out.
No one has mentioned a specific number regarding
the accurate Probe-Spacing of a 4-Probe arrangement,
so I was never disabused of my incorrect association of that
previous picture, which I somehow ????? associated with this Thread.
I apologize for any confusion I may have caused.
If a rigid-frame was devised that would hold the 4-Probes in a fixed pattern,
( the larger the 4-point pattern is, the more measurement-resolution there will be ),
and provisions are made for guaranteeing equal contact pressure,
and therefore equal Contact-Resistance, for each Probe-Tip,
and the surface that is supporting the Foil is completely non-Conductive,
then this idea could have some value.
The rigid-frame / holder could possibly be hinged in place, and held up with a spring
over a designated testing area to facilitate a quick "go / no-go" test.
.
.
.
single point probe, approximately 0.125" in diameter,
and divided into 4-equal-quadrants each separated by about ~10-thousands of an inch.
My bad,
there are NO pictures in this thread.
The picture is still stuck in my head,
and I don't remember where it came from.
Thank-You Mr. Salts for pointing this out.
No one has mentioned a specific number regarding
the accurate Probe-Spacing of a 4-Probe arrangement,
so I was never disabused of my incorrect association of that
previous picture, which I somehow ????? associated with this Thread.
I apologize for any confusion I may have caused.
If a rigid-frame was devised that would hold the 4-Probes in a fixed pattern,
( the larger the 4-point pattern is, the more measurement-resolution there will be ),
and provisions are made for guaranteeing equal contact pressure,
and therefore equal Contact-Resistance, for each Probe-Tip,
and the surface that is supporting the Foil is completely non-Conductive,
then this idea could have some value.
The rigid-frame / holder could possibly be hinged in place, and held up with a spring
over a designated testing area to facilitate a quick "go / no-go" test.
.
.
.