The Stabila 29024 Type 80A-2 construction level, 24" in length, includes a strong rectangular aluminum profile with reinforcing ribs, suitability for overhead (vial down) measurement, and removable end caps. Stabila's general purpose level is designed for the tile installers and all job siteApplications. Easy cleaning, absolutely waterproof, and always accurate - so you can work with confidence and speed. Other features include an easy to read top mounted horizontal vial, a rugged design, certified accuracy in top read position: 1/32" over 72", and one Horizontal (level) and two Vertical (plumb) levels. WARNING: California residents, this item qualifies for Proposition 65 legislation.