Made of aluminium · Powder-coated silver coloured surface · Magnified horizontal vial for faster recognition of the measurement result · Patented mirror vial - plan view of the vertical vial · Milled measuring surface up to a length of 120 cm · Measuring accuracy in normal position ± 0.5 mm/m, in inverted position ± 0.75 mm/m Further technical information: · Measurement accuracy upright position max.: Max. ± 0.75mm/m · Measurement accuracy normal position max.: Max. ± 0.5mm/m · Colour: Silver