Naqshadeynta muuqaalka ee miraha dhallaanka saafiga ah ee aluminium biibiile bac ah waxaa loogu talagalay sawirka bisadda.Muuqaalka quruxda badan maaha oo kaliya inuu muujiyo calaamadda, laakiin sidoo kale soo jiidata ilmaha.Bacda baakadaha bireed ee aluminiumka gudaha ayaa si fiican u dammaanad qaadi kara miraha saafiga ah.cusub iyo tayada.