aluminium box section level 1.with powder coated 2.three accuracy spirit vial 3.metric or inch scales on the side aluminium spirit level1.aluminium alloy body with powder coating. Or oxygenize2.three spirit vials :horizontal,vertical and one adjustable vial3.two pieces ABS end caps with hang hole4. with metric or inch scales on the sideface5.size:18",20",24",32",40",48",60",72",80" ...