Marka laga hadlayo xadhkaha matoorada, haddaynu nahay kuwa soo saarayaasha mootada ama isticmaaleyaasha mootada, dhammaanteen waan ognahay in matoorada culculus, rullaluistuyada cylindrical loo isticmaali doono dhamaadka fidinta matoorka, iyo gaar ahaan