-Heavy-duty aluminium box level with 1.5mm wall thickness for maximum strength -Precision accuracy: 0.5mm/M - trusted by professionals -Durable powder-coated finish resists wear, scratches and corrosion -High-visibility curved horizontal vial with 300° readability from all angles -Wide-view 150° vertical vial(s) for easy sighting in awkward positions -Reinforced vial support system ensures consistent long-term accuracy -Full-sized double rubberised end caps provide superior shock and drop protection -Built tough for everyday site conditions - reliable performance you can trust