Dear Ahmed
You can play around with the weight as you and others have suggested, but it might be better to return it to Brunton to get it rebalanced for the magnetic latitude zone you are going to work in. An alternative is Suunto - they make a universal compass that works at any magnetic latitude (north or south). It is a very clever system: the main needle is non-magnetic, but has two small needles set at each end, each pivoted on a horizontal axis, so they can follow the force lines without unbalancing the main needle - this works at any magnetic inclination. I have used mine from 80°S to 80°N without problems.
Hope this helps
David
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David Macdonald
Professor of Petroleum Geology
University of Aberdeen
Meston Building
Aberdeen AB24 3UE
Tel: +44-1224-273451
Email: [log in to unmask]
________________________________________
From: Tectonics & structural geology discussion list [[log in to unmask]] On Behalf Of ahmed abusharib [[log in to unmask]]
Sent: 09 March 2012 10:04
To: [log in to unmask]
Subject: Enquiry Please!
Dear Colleagues
Actually I bought a new Brunton Compass and when i tried to use it in the filed here in South Africa, it seemed that the needle does not move freely!
Should I reverse the weight attached to south-seeking end of the needle? or what to do ?
Can anybody help me how to solve this problem!
Thanks
Cheers
Ahmed
Dr. A. Abu Sharib
Geology Department
Faculty of Science,
Beni-Suef University,
Beni-Suef, Egypt.
Salah Salem Street.
http://www.bsu.edu.eg/
Tel: 01518793903
The University of Aberdeen is a charity registered in Scotland, No SC013683.
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