The magnets can be placed either side of the bearing so the sapphire
bearing is free of mechanical obstrction. The weight is placed on the
other (N on card) side in the southern hemisphere

Cheers MC

Simple Simon wrote:

But, as you well know, the magnet(s) cannot be place at the center
of the card because that is where the bearing resides. Therefore,
it follows that the magnet is off center favoring whatever side
of the card minimizes the weights placed opposite of it to compensate
for dip.

Are your southern hemisphere compasses built the opposite of northern
hemisphere compasses with respect to magnet and weight placement?

S.Simon


"The_navigator©" wrote in message ...

I'm sorry I don't really understand the question. Dip is generally
corrected by weights. So take a northern compass south and card tilts
and develops a dip error. The dip in the south is gernerally in the
opposite direction to that in the north if you like to think about it
that way.

Cheers MC

Simple Simon wrote:


This magnet also has a north pole that aligns itself opposite
of the Earth's poles.

Does a southern hemisphere compass, in order to minimize card dip,
have the magnet placed the opposite direction on the south side of
the card?

S.Simon


"The_navigator©" wrote in message ...


You are correct. The dip would throw the card off and might be a
problem. In fact some tasco binocs with built in compass sold here did
not work for the reason! No compass seeks the pole(s). They just align
themselves with local field. If you look at a large scale chart with
variation the lines can often wander a great deal (let alone the local
anomalies).

Cheers MC

Simple Simon wrote:



Since the north magnetic pole is not resting upon the surface of the Earth
compasses made for Northern Hemisphere use are usually weighted on the
card on the southern side to keep the card more level as the north side of
the card seeks out the north pole buried well inside the Earth.

Are the compasses you Australian and New Zealand ******s use weighted
any differently? What if you were going to sail to Canada or something.
Would your southern compass work in the Northern hemisphere? Also
does you compass really seek the North magnetic pole or is it made
backwards to seek the south magnetic pole.

Enquiring minds want to know . . .

S.Simon

Thanks.

It sounds like you know of which you speak.
It sounds like a northern hemisphere compass would
not work too well in the southern hemisphere just
as I thought and for the reasons I suspected.

Poor Oz was clueless as are the greater percentage
of subscribers here.

S.Simon


"The_navigator©" wrote in message ...
The magnets can be placed either side of the bearing so the sapphire
bearing is free of mechanical obstrction. The weight is placed on the
other (N on card) side in the southern hemisphere

Cheers MC

Simple Simon wrote:

But, as you well know, the magnet(s) cannot be place at the center
of the card because that is where the bearing resides. Therefore,
it follows that the magnet is off center favoring whatever side
of the card minimizes the weights placed opposite of it to compensate
for dip.

Are your southern hemisphere compasses built the opposite of northern
hemisphere compasses with respect to magnet and weight placement?

S.Simon


"The_navigator©" wrote in message ...

I'm sorry I don't really understand the question. Dip is generally
corrected by weights. So take a northern compass south and card tilts
and develops a dip error. The dip in the south is gernerally in the
opposite direction to that in the north if you like to think about it
that way.

Cheers MC

Simple Simon wrote:


This magnet also has a north pole that aligns itself opposite
of the Earth's poles.

Does a southern hemisphere compass, in order to minimize card dip,
have the magnet placed the opposite direction on the south side of
the card?

S.Simon


"The_navigator©" wrote in message ...


You are correct. The dip would throw the card off and might be a
problem. In fact some tasco binocs with built in compass sold here did
not work for the reason! No compass seeks the pole(s). They just align
themselves with local field. If you look at a large scale chart with
variation the lines can often wander a great deal (let alone the local
anomalies).

Cheers MC

Simple Simon wrote:



Since the north magnetic pole is not resting upon the surface of the Earth
compasses made for Northern Hemisphere use are usually weighted on the
card on the southern side to keep the card more level as the north side of
the card seeks out the north pole buried well inside the Earth.

Are the compasses you Australian and New Zealand ******s use weighted
any differently? What if you were going to sail to Canada or something.
Would your southern compass work in the Northern hemisphere? Also
does you compass really seek the North magnetic pole or is it made
backwards to seek the south magnetic pole.

Enquiring minds want to know . . .

S.Simon