• Permanent impact-resistant plastic end caps are used to protect the measuring surfaces.
• The upright height of the level’s hollow profile must be appropriately dimensioned to provide good shock-absorption. STABILA also provides end caps with practical additional functions.


1 Standard end caps: impact and shock-resistant.
2 End caps with rule holder: a case for wooden folding rules.
3 End caps with patented anti-slip stopper: holds firm even when laid with just one hand. Convenient for marking out. Greater security.
4 Removable end caps: Mark right into corners – lay on narrow edges.

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• The highest measurement accuracy provided by a precise, even, inner surface with shallow internal radius: Precise readout from an unimpaired, jerk-free bubble track - even for the smallest changes in inclination.
• The best basis for precise work.
• Internal vial curvatures: highly precise internal contours provide all-round performance so that you can even measure accurately overhead.
• What does the measurement accuracy reveal? If, for instance, the spirit level has a measurement accuracy of 0.029° = 0.5 mm/m, this means: over a distance of 10m, the spirit level has a maximum deviation of 5mm.

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• Finger openings alleviate handling.
• Two-component handholds with a special shape for a secure grip.
• Provides a secure, skid-proof hold even when using just one hand




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Normal position measurement

• Normal measuring means: the vial is positioned at the top.
• Measurement accuracy in the normal position 0.5 mm/m. Measurement deviation of only 5mm over 10 m.

Overhead measurement

• The spirit level is turned over during overhead measurement and the vial is then read from underneath.
• Only spirit levels, whose vials are suitable for overhead measurement, provide reliable measurement in this position.
• Measurement accuracy during overhead measurement 0.75 mm/m. Reason: the identical inner curvature in the vial. Deviation of only 7.5mm over a distance of 10m.

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• The measuring surfaces on spirit levels can be designed in various ways
• In most cases, the complete body of the spirit level, including the measuring surface, is powder-coated, painted or anodised, but on some spirit levels the measuring surface is also milled flat after the coating process.
• In every case, it is important that the surface be completely smooth.
• For this reason, not every side of a spirit level can be used as a measuring surface.
• On STABILA spirit levels, a printed symbol shows whether only the bottom side or also the top side of the level can be used for measuring.
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• Vial in high-quality solid acryl glass. Identical internal contours.
• Vial’s inner curvatures: all-round performance is provided by highly precise internal contours, so that you can even measure accurately overhead.
• Individually inserted corrosion-proof read-off rings – immovable seated in precisely positioned recesses: still capable of being easily read, even after years and years..
• The special fluorescent vial fluid is highly resistant to UV radiation.
• This provides an easy-to-read bubble which moves neither too quickly nor too slowly.
• The optimum design of the bubble size and the ring distance provides good readability in all situations and in all weathers.
• The smooth vial surface can easily be cleaned with water
• During its production, the spirit level’s accuracy will be tested 3 x 100%.

Electrostatic discharge
STABILA spirit levels reliably prevent any influence from electrostatic discharge on the vial’s operation and therefore the measurement accuracy.

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• Rare earth magnets have five times the holding power of traditional ferrite magnets. No more slipping. You always have your hands free when aligning metal posts and beams.


Extra strong rare earth magnet system – ideal for structural steelwork. Firm hold even on thin pipes


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• The high-quality plastic surround forms the connection between the vial block and the spirit level’s profile.
• For this reason, the vial block holder, provided that it is aligned parallel to the measurement surface, is one of the most important elements governing the spirit level’s accuracy.
• One of STABILA’s most secure processes is its patented moulding-in process, in which the vial block holder consists of two sections: the receptacle, which can be adjusted, and the clamping unit, which holds the vial securely in the profile. All three elements are incorporated into the body of the spirit level.
• A lifelong, unstressed, unshakeably secure connection is produced by pressing in a non-shrinking synthetic resin.
• The vial block is adjusted in the holder before the resin hardens, thereby guaranteeing the highest long-term precision.
• Vials or vial systems that are screwed on and not moulded into the profile cannot meet this requirement.

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