In a message dated 6/13/00 2:38:16 PM Eastern Daylight Time, ChrisAtUpw 
writes:

<< 
    Was this the Fat Quarters Magnetometer, the one published in the Amateur 
Scientist or another one, please?
 
    Lundqvist also published a good moving magnet magnetometer using a 
compass and field coils. >>
        
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Hi Chris, 
    No. This one is from "the Magnetic Measurements Handbook" by J. M.  
Janicke.
See his web site at <>. Janicke lives nearby 
so I visited him to buy a copy of his book and get permission to publish the 
chapter on the flux gate magnetometer in our Solar Bulletin. He is a retired 
electrical engineer who spent a good part of his life designing magnetic 
instruments for a company that builds a lot of military and aerospace stuff. 
His book is written mostly for amateurs who want to build homemade magnetic 
devices. It is an excellent book with many interesting projects. I very much 
doubt you could find a better book on the subject. He also sells flux gates 
for $35. Their toroidal core has been correctly annealed in Hydrogen and I 
bought one just in case I couldn't build my own, as I would very much prefer 
to do. With the benefit of hindsight I can see this was a GOOD IDEA !!!
Best regards,
Cap
        
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