drive. You have to be careful because can smash your fingers playing with them.
Jack At 02:47 PM 2/1/2005, tony moss wrote:
John Carmichael commented; >Anyway, I've been thinking that for some future project, that it would be >possible to attach the gnomon to the SGS using a magnet. Perhaps you should consider using the new 'rare earth magnets'. These are available in a variety of sizes but the tiny discs have phenomenal attractive power. A pair face to face are extremely difficult to separate with fingers. They are not expensive and are worth buying just to experience their astonishing attractive force as plaything/curiosities. http://www.rare-earth-magnets.com/ has some details but a Google search will give lots of info. Tony Moss. -
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