Achieve accuracy with this Draper 99817 Spirit Level Kit This Draper 99817 600/1200/1800 Level Kit contains three tough aluminium box section levels with two highly visible \'Opti-Vision\' solid acrylic UV resistant vials, a reinforced horizontal vial with gradient lines and a vertical vial with a side view into a patented curved profile for enhanced visibility. The levels are electrostatically epoxy powder coated and baked for maximum protection. They are fitted with \'Ergo-Grip\'™ non-slip handle on 60cm and two on 90cm and above, oversized shock-absorbing end caps. The base has a finely milled surface up to 120cm (1.8 and 2.0M unground). Accuracy 0.5mm per 1M = 0.029° in standard position. Features: Oversized shock-absorbing end caps Three tough aluminium box section levels Reinforced horizontal vial with gradient lines Vertical vial with a side view into a patented curved profile Two highly visible \'Opti-Vision\' solid acrylic UV resistant vials Electrostatically epoxy powder coated and baked for maximum protection Comes with 1800mm Opti-Vision Box Section Ergo-Grip Levels with Dual Vials (06996) 1200mm Opti-Vision Box Section Ergo-Grip Levels with Dual Vials (02322) 600mm Opti-Vision Box Section Ergo-Grip Levels with Dual Vials (02320)