Level 60 cm Aluminum with Silver Vial max. ±0.5 mm/m PROMAT: Made from aluminum with a silver powder coating. It features an enlarged horizontal vial for quicker reading of measurement results and a patented mirror vial. The top view of the vertical vial allows for easy reading. The machined measuring surface has a length of up to 120 cm, with a measurement accuracy in normal position of ±0.5 mm/m and in reverse position of ±0.75 mm/m. Additional technical specifications include a maximum measurement accuracy in normal position of ±0.5 mm/m and a maximum measurement accuracy in enveloping position of ±0.75 mm/m.