Peter Peregrinus, a friend of Roger Bacon, described in 1269 how a pivoted magnetic needle in a transparent box could be used for taking azimuths.
UPeter Perezrius wayengumhlobo kaRoger Bacon, lalicacisa phandle pha ngonyaka wekhulu lewaka elinye linamakhulu amabini anamashumi mathandathu anesithoba singalungiseleka njani ezinomtsalane kwinalithi ekrelekrele kwityesi yayinokustyenziswa iazimuths.