Ugukingira imiyoboro y’ivyuma ni ngirakamaro aho umuyoboro ukoreshwa hanze canke ushizwe ahantu hari imvura, inkungugu n’ubushuhe buhinduka. Igipande co hanze gikozwe mu cuma gikozwe mu cuma gifise uburebure butari munsi ya 0,5 mm; umuyoboro w’icuma wo mu mutima ufise umurongo w’inyuma w’iminota 219 n’uruhome rw’iminota 6-8.
Ku migambi myinshi y’ubuhinga, uwuguze ni we abanza gufata ingingo y’umubiri w’imiyoboro, hanyuma akaremeza nimba hakenewe igice co hanze gikozwe mu giti, igice co gukingira canke ikindi gipfukisho. Gusuzuma ivyo hakiri kare bituma gupakira no gushiramwo ahantu umuntu ashobora kubimenya neza, canecane iyo amatiyo menshi yoherejwe mu gice kimwe. Bituma kandi amahugurwa agira umwanya wo gushiramwo ikimenyetso ku migwi hakurikijwe inomero y’umurongo, ivyo bikaba ari ibintu bitobito ariko bifasha abakozi bakora mu buryo bubereye. Nimba iyo tiyo izobikwa hanze mu kiringo c’indwi nyinshi, n’ibipfukisho vy’iherezo n’uburinzi bworoshe bw’imvura na vyo nyene bikwiye kwiyumvirirwa.
