File:Galileo-lodestone-150-768x835.png

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English: Galileo's lodestone. It is a sector or military compass from which a lodestone is hanging, supporting an iron weight in the shape of a sarcophagus (coffin), belonging to the Italian scientist Galileo Galilei. The iron sarcophagus weighs 15 pounds, the lodestone only 6 ounces. For 400 years the lodestone has held up the weight without losing its strength.
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Source http://www.marcdatabase.com/~lemur/lemur.com/gallery-of-antiquarian-technology/philosophical-instruments/galileo-singer/
Author Charles Singer

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current17:15, 10 June 2007Thumbnail for version as of 17:15, 10 June 2007768 × 835 (1.28 MB)Usp (talk | contribs){{Information |Description=Galileo Galilei's Sector |Source=http://www.marcdatabase.com/~lemur/lemur.com/gallery-of-antiquarian-technology/philosophical-instruments/galileo-singer/ |Date=1921 |Author=Charles Singer |Permission= |other_versions= }} [[Cate

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