Made of lightweight aluminium. Accuracy +/- 0.5 mm/m. Precision of 0.5 mm/m in normal position and 0.75 mm/m in inverted position. Features barrel-shaped vials with fluid that is resistant to UV light and extreme temperatures. Sensitivity of 10 mm/m and high visibility. The radius of the vial is 200 mm. Unbreakable vials with 2 lines on each side of the flat vial for easier use. The aluminium profile has a wall thickness of 1.4 mm and weighs 520 g/m.