Anyị na -ewebata uche gị – Otu nha nke nhazigharị, nke a na -akpọkwa lab metal slotted weight, nke enwere ike iji maka ntọala mbụ nke naanị akpịrịkpa azụrụ, nhazi oge nke akpịrịkpa ọla na nyocha mgbe niile maka izi ezi nke ụdị ejiri mee ma onye na -amu amu. na ọrụ ndị ọkachamara. A na-eji igwe anaghị agba nchara eme ihe nha ma nwee elu na-egbu maramara.