Ibi bikoresho byinyo byakoreshejwe mukugabanya ibikoresho byinyo, ibikoresho byinyo ni Tin Bonze naho igiti ni 8620 ibyuma bivangwa.Mubisanzwe ibikoresho byinyo ntibishobora gusya, ubunyangamugayo ISO8 nibyiza kandi igiti cyinyo kigomba kuba gishyizwe muburyo bwuzuye nka ISO6-7 .Ikizamini cyo gupima ni ngombwa kubikoresho byinyo byashyizweho mbere yo koherezwa.