Gutoranya neza byerekana neza ko bigabanya ibyago byo gutsindwa no guhangayika no kuzamura sisitemu muri rusange. Gukoresha iri koranabuhanga ryemerera geometrike igoye uburyo gakondo bwo gukora bushobora guharanira kubigeraho. Mugihe inganda zikoresha ingufu z'umuyaga zikomeje kwiyongera, uruhare rw'abatwara umubumbe rugenda rugaragara cyane, bigira uruhare runini mu guhindura ingufu no gukomeza kuramba mu kongera ingufu z’amashanyarazi.
Twari dufite ibikoresho byo kugenzura bigezweho nka Brown & Sharpe imashini yo gupima imirongo itatu, Colin Begg P100 / P65 / P26 ikigo cyo gupima, ibikoresho bya silindrike yubudage ya Marl, Ubuyapani bugerageza ibizamini, Optical Profiler, umushinga, imashini ipima uburebure nibindi kugirango tumenye neza ko igenzura ryanyuma neza kandi ryuzuye.