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     Compass magnetic. Pk/10  (TS0316) A compass suitable for elementary experimentation with magnetic lines of force.  Magnets: Ring magnets. Multi coloured Pk/10   (TS0327) Ring magnets are circular coloured metal magnets of 30 mm diameter with a central hole of 9 mm diameter and come in a set of 10.  Magnetic 'Loadstone'  Pk/ 200gms  (TS0434) Permanent naturally occuring rocks consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically .  Magnet: cow magnet. Each  (TS0685) The cylindrical Alnico 'cow' magnet is highly polished and measures approximately 90 mm x 12 mm diameter. Very strong  
 
 
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