Gutanga- Itsinda ry'umwami 

Icyuma kiringaniye bivuga ibyuma 12-300mm ubugari, 3-60mm umubyimba, urukiramende mu gice kandi kirimo buhoro buhoro. Icyuma cya Ferish birashobora kurangirwa icyuma, cyangwa birashobora gukoreshwa nkubusa kugirango usurire umuyoboro ususurutsa kandi unanutse kurupapuro. Ikoreshwa nyamukuru: Ibyuma bifatika nkibikoresho birashobora gukoreshwa kuri fer yicyuma, ibikoresho nibice byakanishi, kandi bikoreshwa nkibice byubaka ikadiri na escalator.