Nkedo nkenke na-eme ka a mata izi ezi akụkụ dị elu, na-ebelata ihe ize ndụ nke ọdịda n'okpuru nrụgide na ịkwalite ntụkwasị obi sistemu niile. Ojiji teknụzụ a na-enye ohere maka geometric dị mgbagwoju anya nke usoro nrụpụta ọdịnala nwere ike isiri ike nweta. Ka ụlọ ọrụ ike ikuku na-aga n'ihu na-eto eto, ọrụ nke ndị na-ebu mbara ala na-abawanye ụba, na-enye aka na ngbanwe ike dị mma na nkwado dị ukwuu na ngwọta ume ọhụrụ.
Anyị na-eji ngwá ọrụ nyocha dị elu dị ka Brown & Sharpe igwe na-ahụ maka nhazi atọ, Colin Begg P100 / P65 / P26 nha center, German Marl cylindricity ngwá, Japan roughness tester, Optical Profiler, projector, ogologo nha igwe wdg iji jide n'aka na ikpeazụ. nyocha nke ọma na kpamkpam .