... coated. 2.)3pcs of entire level indicate level,45,plumb. ). Heavy duty aluminum alloy frame thickness and colour oxidized coated.2.)3pcs of ... entire level indicate level,45,plumb.1). Heavy duty aluminum alloy frame thickness=1.4~1.8±0.1mm and ... ruler body.Spirit levelsize:300,400,500,600,800,1000mm Heavy duty aluminum alloy frame thickness Spirit level MTO011