STABILA 29532 58 in. and 32 in. 3-Vial Contractors Level Set includes 2 rugged, nice and easy-to-grip contoured box shape beam levels - one measuring 58 inches and the other 32 inches - this product is perfect for tub and shower tile installing and your everyday leveling needs. With a lightweight,trouble free cleaning and entirely waterproof design, both of these levels use a patented epoxy structure to lock the vials into the frame and keep them permanently registered; each level includes 3 easy to see acrylic vials (1 horizontal and 2 vertical) with internal spring steel hairline indicators for life-long reading accuracy. This product has certified level accuracy of .029 degrees (1/32-inch over 72-inch) in top read position and is backed by a lifetime limited warranty.