1, Aluminum box section:23x 59mm, Thickness : 1.5mm+/-0.1mm.
2, Aluminum extrusion profile for none warp or twist.
3, With three vials:(45°,180°,90°).Accuracy:0.5mm/m.
4, Double milled surface for high flatness.
5, Size:300mm~500mm without handle;size:600mm~2000mm with two handles.
6, Powder coating finish or color anodized finish.
7, Strong holding rare earth magnests(optional).Box Level
website:http://www.mgs-level.com/spirit-level/box-level/