This aluminum box level has 3 fixed vials (45, 90,180) Professional accuracy 0.5mm/m.6 lines horizontal vial for angle measuring 1%, 2% Double-color rubberized endcaps for shock resistance and to prevent from slipping Powder coating finish with double milled base Hang holes on end caps for convenient storage Exceptionally easy to read in any working position thanks to the viewing window on the front Suitable for carpentry, architecture, precision measurement, home improvement and more