E mōhiotia ana e te katoa, he tino rongonui te mīhini whatu whakarewa i te mākete o Īnia; he whānuitia te whakamahinga o ngā whatu/kēti kua oti mō ngā rauemi hanga, te ahuwhenua me ērā atu mea;

He pai te tawhā paerewa o tā mātou mīhini mata whatu whakarewa mō te waea 0.65-2.5mm, ko te rahi o te whakatuwheratanga ka taea te 1'' 2'' 3'' 4'', ko te whānui ko te Mōrahi 2.5m;

Ko ngā tawhā tino rongonui i te mākete Inia ko ēnei e whai ake nei:

Kua kaweakehia e mātou tētahi momo mīhini mata whatu kotahi mō tētahi o ngā kiritaki i mua, he waea 1-2mm, he kōhao 15mm, he whānui 5 putu; nā te iti rawa o te rahi o te kōhao, hei hanga i ngā takai mata tino pai, i hangaia e mātou he mīhini me te taputapu roera kua whakararahia, ā, he motuhake hoki;

He pai te mahi a tēnei mīhini mā te kaiwhakamahi; ā, he maha ngā pātai i tae mai i ngā kaiwhaiwhai o tēnei tauira mīhini;

Mena he hiahia motuhake tāu kāore e kitea he tauira e rite ana, tēnā whakapā mai ki a mātou, ka hangaia e mātou he hoahoa motuhake māu kia rite ki ō hiahia me tō tahua; ka whakaratohia e mātou he otinga whaitake mō ngā mīhini waea mata;