Hi all,

I put up a simple YouTube video with some inferred material variation
references to Chris
Chapmans original excellent magnet and iron/steel seismometer Assembly's.

In short, it only suggests a lesser sensitive route of utilizing a round
coil with much the
same size iron/steel (but not the thickness), with only one plate.  The
magnets used are
twice the thickness (~ for mainly upright support stability).  A permanent
fixation to the steel
could be attained with say; "Devcon 5 minute epoxy"; or, alternatively just
abutting the outside
of the magnets with selected sufficient iron or steel non-glued "anchors" to
keep the
attracting poles apart.

Obviously there is nothing new here, but it can work in a pinch of a lack of
material or
metal working tools.  It's simply a "U" shaped neodymium sensor magnet
assembly but
it will work.

YouTube seems to suffer from too little references to amateur
seismology.....

Take care,  Meredith Lamb
Hi all,=A0

I put up a simple YouTube video with some inf=
erred material variation references to Chris
Chapmans=A0original =
excellent magnet and iron/steel seismometer Assembly's.

<=
/div>
In short, it only suggests a lesser sensitive route of utilizing a rou=
nd coil with much the
same size=A0iron/steel (but not the thickne=
ss), with only one plate. =A0The magnets used are
twice the=A0thi=
ckness (~ for mainly upright support stability). =A0A permanent fixation to=
 the steel
could=A0be attained with say; "Devcon 5 minute epoxy"; or, a=
lternatively just abutting the outside
of the magnets with select=
ed sufficient iron or steel non-glued "anchors" to keep the
attracting poles apart.

Obviously there is no=
thing new here, but it can work in a pinch of a lack of material or
metal working tools. =A0It's simply a "U" shaped neodymium=
 sensor magnet assembly but
it will=A0work.=A0

YouTube seems to suffer fr=
om too little references=A0to amateur seismology.....

<=
div>Take care, =A0Meredith Lamb

=A0