The Ultra Mag G3 is second to none with a design package that will meet any contractor’s needs. It has a built-in auto 45-degree angle for quick referencing and perfect alignment, plus a 4-vial system including 90°, 45°, 30° and oversized 0° reading for easy viewing from oversized view ports that can be seen on all sides simultaneously for more sensitive flat surface calibration. Four oversized rare earth neodymium magnets supply extraordinary holding power. Our V-Groove System lets the Ultra Mag G3 straddle almost any pipe up to 10 inches in diameter.