Aluminium profile spirit level


Round horizontal vial with a magnifying effect, provides unsurpassed readability, also for inverted measurement. Strong walls for longer service life and shock-absorbing rubber caps. Highest accuracy (0.5 mm / m) due to ultrasonically-welded vials. Inverted measurement (0.75 mm / m).

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)


Available designs

Design 20cm 30cm 40cm 50cm 60cm 80cm 90cm 100cm 120cm 150cm 180cm 200cm
Alustar 691 x x x x x x x x x x x x
Alustar 691 M x x x x x x x x x
Alustar 691 S x x x x x x x x x x
Alustar W x x x x
Alustar WM x x x x


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BMI Messzeuge

  • Bayerische Maßindustrie
  • A. Keller GmbH
  • Rosengasse 12
  • DE-91217 Hersbruck, Germany
  • Phone (national): 09151 7301-0
  • Phone (intl): +49 9151 7301-49
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