Silas Higgon wrote:
> Hello dialists,
>
> I am a newcomer to the internet and have been following your discussions
> with interest. I am a dial maker and am sometimes asked to make a
> wall-dial for another country. If I am sent a compass bearing for the wall
> I am left with the problem of mag
Hi Silas,
Having faced the same problem of determining a client's remote wall's
declination for some years I've come up with a DIY Kit accompanied by a video.
Essentially it's a precision engineered version of the 'nail-in-a-plank'
method.
The client sets it up as shown in the vide
I'm glad Patrick mentioned the swing which can occur on a compass when you
bring it close to a building. I am in the process of making a vertical dial
for a library and depending on where I hold the compass along the wall of
the building I can get as much as a 40 degree change in the location of
Hi Silas,
Nice to see you on here.
Re your interest in looking up magnetic variation; sadly, I doubt that even
if you could it would be very reliable. The magnetic variation not only
changes within a comparatively short time but it has local geological
variations too. On top of that you don't
Silas,
Admiralty charts show lines of magnetic variation on them. Of course these
are likely to cover only coastal areas!
More seriously, I would imagine a phone call to an HMSO office would tell
you if maps are produced showing magnetic variation. Equally, I'm sure
that one of the other list
Hello dialists,
I am a newcomer to the internet and have been following your discussions
with interest. I am a dial maker and am sometimes asked to make a
wall-dial for another country. If I am sent a compass bearing for the wall
I am left with the problem of magnetic variation and have to a
