Ng’oma imodzi ndi ng’oma.Ntchito yake ndikukokera malekezero a thupi la rivet mu ng'oma imodzi pambuyo pothamanga.
Mtundu wa ng'oma zambiri ndikusewera ng'oma zingapo.Ntchito yake ndikuphatikiza mutu wa drum rivet ndikuchepetsa kupanikizika komwe kumachitika pamwamba pazigawo zamapangidwe.Zomangamanga zapamwamba zimakhala ndi ntchito zoletsa zivomezi komanso kuchepetsa kuthamanga.
Nthawi yotumiza: Nov-25-2021