Box Level-3 Vial with Metric Rule,aluminum level Rule,measuring tool Box Level-3 Vial with Metric Rule,aluminum level Rule,measuring toolManufactured from alumium with a fine finish and protectiveSize:300mm/12", 400mm/16", 500mm/20", 600mm/24", 800mm/32", 1000mm/40", 1200mm/48", 1500mm/60"