Embonini yokucubungula amatshe, indima yokulinganisa imishini ibalulekile ekuqinisekiseni ukuthi izinto ziyasikwa, ziyakhiwe, futhi waqeda ngokunemba. Lapho sibhekisa ku- "Stone ligibrating machines, "Sigqamisa amaphuzu athile noma izindawo ezingaphakathi kwenqubo yokulinganisa ebalulekile ekufezeni imiphumela oyifunayo ekuqambeni kwamatshe. .. Ukuqonda lezi zindawo kungaphawula