1. Igishushanyo mbonera cy'inguni 90° ku ruhande kizigama umwanya wo gushyiramo kandi gikwiriye ibikoresho bito n'ibikoresho bito byo gupima
2. Magneti zihuza kandi zigafata neza umurongo; zihita zifunga kandi zigahagarika; zihita zihagarika iyo zikuwe, bikarinda kwangirika kw'ikibaho cy'uruziga
3. Udupira tw’amashanyarazi twubatswemo twizeza ko umuriro uhoraho ugenda neza kandi ko ingufu ziboneka, bitanga uburyo bwo gukorana neza no gukumira isesengura ry’ibinyoma.
4. Bikwiriye gupimwa bateri, imiyoboro yo ku ruhande rw'ibikoresho, no gushyushya amashanyarazi hakoreshejwe magnetique; ni byiza cyane ku bikoresho bisaba guhuza no gusiba kenshi.