Stanley 48 in. Aluminum I-Beam Level 3 vial

The 48" aluminum I-beam level is durable and accurate. Its heavy-duty aluminum I-beam construction provides rigidity and accuracy of 0.0015 in./in. With 360° vials, pipe groove for use on rounded surfaces and shock-absorbing end caps for heavy-duty use, this tool is built for accuracy, ease of use and durability.