STANLEY 42-324 I-Beam Level 24 in L 3-Vial 1-Hang Hole Non-Magnetic Aluminum Black/Yellow

180-deg rotating vial for a range of situations. Measuring scale printed directly on the level eases layout work. Heavy-duty aluminum I-beam construction provides rigidity and accuracy. Level accuracy of 0.0015 in (0.15 mm/m). 360 deg vials set directly into frame never need adjustment.