The professional-grade Kapro 985-41X Apollo Box Level features VPA certified, hand-calibrated vials to help you level and measure with ease, while the magnetic version allows for quick and easy setting. This box level has 3 magnified shockproof acrylic vials that are 33% more visible than traditional vials. Our vials have a sensitivity of 0.0005 in./in. (0.5 mm/m) and are machined from an optical-grade acrylic block to provide clear readings and resist breakage.The Kapro 985 Apollo is fully reversible for quick transitions between floor and ceiling leveling and allows for plumb measuring without parallax errors. These professional levels are used in carpentry, construction, masonry, and tiling. The reinforced asymmetric aluminum frame, ergo-grip handles, and shock-resistant end caps make it easy to handle for extended periods.At Kapro, we reimagine precision tools and accessories for professional craftsmen to weekend warriors while setting high standards by driving innovation in our designs.