Design: Sturdy housing made of high-quality special cast, finished with a hammer-tone paint. Prismatic and flat base with finely ground contact surfaces at an angle, essential for scribing, aligning, etc. All measuring surfaces are precisely parallel to the bubble level axis. Features one longitudinal and one transverse glass bubble. Insulated handles on the housing and protective glass over the bubbles. Full thermal insulation on the entire housing prevents influences from hand and breath heat. Housing cutout allows for side reading of the bubble. Delivered in a robust plastic case with a matching insert. Note: Magnetic version available upon request. Usage: For leveling surfaces, shafts, machines, etc.