"Gerhard Kremer" ba kalma ba ce amma suna. Gerhard Kremer, wanda kuma aka fi sani da Gerardus Mercator, masanin zane-zanen Flemish ne kuma masanin kasa wanda ya rayu daga 1512 zuwa 1594. An fi saninsa da samar da tsinkayar Mercator, nau'in hasashen taswira da ake amfani da shi a yau. Hasashen Mercator ya kasance da amfani musamman don kewayawa domin ya baiwa matuƙan ruwa damar tsara hanya madaidaiciya akan taswirar da ke wakiltar saman duniya mai lanƙwasa.