PRECISE - The hand-calibrated Kapro 946 Smarty Magnetic Cast Pocket Level features gradient lines up to 2% marked inside the vial so they won’t scratch off or move. ACCURATE - This level has an accuracy of < 0.0005 in/in (0.5 mm/m) and features vials including an OPTIVISION Red horizontal vial. Easy-to-read bubbles with a high contrast ratio make visibility up to 8 times easier to read in all light conditions compared to traditional levels. MAGNETIC - The base of the Kapro 946M Smarty is finely milled and has Rare Earth magnets for easy and accurate use on pipes and corners. DURABLE - The Kapro 946M Smarty 's integrity is protected by a reinforced profile with a bridge at the horizontal vial for superior strength. KAPRO - We reimagine precision tools and accessories for professional craftsmen to weekend warriors while setting high standards by driving innovation in our designs.