I te whakaotinga o tēnei, ko te whāwhā ki te rawhiti-ki te hauauru o te mahere, e piki atu ana i te tawhiti atu i te paenga, e haere tahi ana i te pūwhitinga o Mercator e te whāwhā ki te raki-ki te tonga, kia rite ai te tauine ki te rawhiti–uru ki te tauine ki te raki-ki te tonga, me whakarite he mahere whakataurite.