Tef na Scotch.Richard Drew ne ya kirkiro shi a cikin 1928 a St. Paul, Minnesota.Ana iya raba tef ɗin manne bisa ga ingancinsa: tef ɗin manne zafin jiki mai ƙarfi, tef ɗin mai gefe biyu, tef ɗin mannewa, tef ɗin mannewa na musamman, tef ɗin mannewa mai matsa lamba, tef ɗin mannewa mai yanke mutuwa, inganci daban-daban don buƙatun masana'antu daban-daban.