Stabila 250mm / 10\" Torpedo Level & Holster Type 81 SM 2 Vials (02511 / STB81SM-25)  The Stabila 02511 Type 81 SM Torpedo Level & Holster is compact, tough and ideal for metal. The bevelled shaped level has a die-cast aluminium body which makes it one of the sturdiest levels that STABILA make. This level is for all those who need both hands free when aligning and levelling on steel frame structures. The 81 SM Torpedo has a rare earth magnet system with strong holding power. The vial is precisely aligned with the milled measuring surface then locked together. This gives you years of accurate levelling. The extra-strong adhesion of the rare-earth magnets is needed for metal construction and scaffolding in particular, as well as for fitting and welding. Sold in a Box of 10. Features: Slender, trapezoidal profile shape for an optimum, easy grip Easy cleaning - dirt can be removed thanks to the electrostatic powder coating Spirit level with one precision-milled measuring surface - no discolourations on the surface With a length of only 25 cm, the torpedo spirit level is ideally suited for applications in cramped conditions Strong rare-earth magnet system for adhesion to metal objects - leaves the hands free when aligning and adjusting pillars and supports STABILA installation technology ensures long-term accuracy - measuring accuracy in normal position is ± 0.5 mm/m and ± 0.75 mm/m in reverse position Equipment: 1 horizontal vial, 1 vertical vial, 1 milled measuring surface, rare-earth magnet system (up to 5 times stronger than standard ferrite magnets) Specification: Size: 25cm / 10 Inch Number of measuring surfaces: 1 Magnet system: Rare-earth magnet Measurement accuracy in normal position: 0.50 mm/m Measurement accuracy in reverse position: 0.75 mm/m