Strong lightweight spirit level featuring a pressure-cast aluminium alloy profile in an open-frame form. Extremely sturdy with electrostatic powder coating for scratch resistance and easy cleaning. Special shape of the profile is very robust and practical, making it ideal for many craftsman. Can be used in the overhead position by turning the level upside down and in this 'transfer position' you can then precisely measure from underneath. Features one horizontal and two vertical vials. Vials accurate to 0.5mm per metre (0.029° = 0.5mm/m) in normal working position and 0.5mm (0.029° = 0.5mm/m) per metre in overhead position. Two milled measuring surfaces. Horizontal vial is visible through windows in the measuring surfaces making it visible from four sides. Vertical vials are visible from three sides. Vials are guaranteed to remain accurate for 10 years.