The original. With patented laser markings and reflection-free readability! 2% slope markings on horizontal vial. Laser-marked vials provide measuring accuracy. Laser-marked vials provide measuring accuracy of 0.5 mm/m throughout its service life. Tube vial offers easy readability. Strong walls for longer service life and shock-absorbing rubber caps.

Our Spirit Level glossary (PDF) provides a good comparison of the selected BMI Levels: The 690, 691, 692, 695, 698 and 699 and the 660, 661 and 665 models are listed here.

Spirit Level glossary (PDF)