Kila kohu ʻolehiʻona:
1. Hoʻopiha piha a me nā mea like ʻole;2. Kiʻekiʻe dimensional pololei, a hiki i ± 0.1mm;3. ʻO ka maikaʻi o ka ʻili maikaʻi, ka mālamalama maikaʻi;4. Ka ikaika o ka corrosion, ka ikaika tensile kiʻekiʻe a me ka ikaika luhi;5. Hoʻohui kemika kūpaʻa, kila maʻemaʻe, haʻahaʻa hoʻokomo ʻia;6. Paipai maikaʻi, kumukūʻai maikaʻi;7. Hiki ke hana ʻia me ka ʻole calibration.