- 2 - 3 solid acrylic impact-resistant vials - glued with epoxy glue (extremely strong connection) - 1 horizontal vial, double lines for adjusting the spirit level to a slope of 2% - 1 - 2 vertical vial - spirit level profile wall - 1.3 mm, profile dimensions 5.0 x 2.0 cm - accuracy is <0.5 mm / m - finely milled abutment edge up to a length of 120 cm - rubber impact-resistant ends protect against falls - rubber protrusions on the sides of the spirit level ensure easier and non-slip holding of the spirit level on the vertical wall - Unlimited guarantee for vial - for accuracy, damage from common falls, leakage and fading of the liquid [***]