Kafin auna maɓuɓɓugan ganye, ɗauki hotuna kuma adana fayiloli, yin rikodin launi na samfur da ƙayyadaddun kayan (nisa da kauri), sannan auna bayanan girman.
1. Auna ganye ɗaya
1) Ma'auni na ƙugiya da ƙwanƙwasa
Kamar yadda aka nuna a kasa.Yi auna tare da caliper na vernier.Yi rikodin serial lamba na takardar bazarar ganyen inda maƙafin yake, girman matsawa (L), adadin matsa, kauri (h) da faɗin (b) na kowane matse, nisan ramin manne (H), madaidaicin manne. , da dai sauransu.
2) Auna ƙarshen yankewa da yanke kusurwa
Kamar yadda aka nuna a kasa.Auna masu girma dabam b da l tare da madaidaicin vernier.Yi rikodin bayanan da suka dace (b) da (l).
3) Auna ƙarshen lanƙwasawa da lankwasawa
Kamar yadda aka nuna a kasa.Auna da ma'auni na vernier da ma'aunin tef.Yi rikodin bayanan girma (H, L1 ko L, l da h.)
4) Auna gefen niƙa da yanki madaidaiciya
Kamar yadda aka nuna a kasa.Yi amfani da ma'auni mai ma'ana da ma'aunin tef don dubawa da yin rikodin bayanan da suka dace.
2. Auna idanuwan da suka yi birgima
Kamar yadda aka nuna a kasa.Auna da ma'auni na vernier da ma'aunin tef.Yi rikodin ma'auni masu dacewa (?).Lokacin auna diamita na ciki na ido, kula da yiwuwar akwai ramukan ƙaho da ramukan elliptical a cikin ido.Za a auna shi sau 3-5, kuma matsakaicin ƙimar mafi ƙarancin diamita zai yi nasara.
3. Auna nannade idanu na ganye
Kamar yadda aka nuna a kasa.Yi amfani da igiya, ma'aunin tef da ma'auni don bincika (?) da rikodin bayanan da suka dace.
