Strongly magnetised steel bars were substituted for the lodestone as a means of magnetising the needle during the eighteenth century.
Ezinamandla zinomtsalane izezentsimbi zazisezibambalwa zaziligaqa lentsimbi elikrwada eliyintsimbi elisisitsalane ezazintathu zazinomtsalane kwinalithi ngexesha leshumi elinesibhozo lenkulugwane.