Posted by David Sherman on Monday, December 04, 2006 at 2:11PM :
In Reply to: Re: David, send me a picture... posted by Gary Troxel on Monday, December 04, 2006 at 9:31AM :
It's a hairspring like in a wind-up watch. The spinning magnetic cup pushes the needle to the right and the hairspring pushes it to the left. Or another way of looking at it, the spring returns the needle to zero.