Umshini wokugoqa intambo uyisisetshenziswa sokukhiqiza izinzipho. Kunezinhlobo ezahlukene zemishini yokugoqa intambo, enganelisa izidingo ezihlukene zemakethe zezinhlobo ezahlukene zokukhiqiza izinzipho. Umshini wokugoqa uchungechunge ulula, uyazwela, uyasebenza futhi uneminye imishini efanayo ayikwazi ukushintshwa.