The Malco L9M 9" (229 mm) top-reading torpedo level includes a magnetic base to hold it in place on materials that contain iron, such as galvanized sheet metal and steel fence posts. It has a duplex-milled aluminum frame with cycolac end plates. Made in the USA, this rugged, lightweight torpedo level is built to withstand shock and abuse. At the same time, its precision-cast parallel edges won't scratch work surfaces. The Malco L9 has a top-read slot and three large vials set in white frames that make quick and easy work of checking plumb, level, and 45 degrees. It also has a grooved working edge for use on pipe and conduit. Malco Products, Inc. has been manufacturing high-quality tools since 1950. All of their products are covered by a Limited Lifetime Warranty.