Expert Quality, tough aluminium box section levels comprising two highly visible 'Opti-Vision' solid acrylic UV resistant vials, a reinforced horizontal vial with gradient lines and a vertical vial with side view into a patented curved profile for enhanced visibility. Electrostatically epoxy powder coated and baked for maximum protection. 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.