Heavy duty, die-cast aluminium frame for accuracy and durability. Features magnetic base and 3 x easy to read, shock-proof vials (includes 2 x front vials). Rare-earth magnets enable one-handed operation and ultimate holding ability. A fine milled, v-grooved surface is ideal for levelling pipes and conduit. Rubber-ended caps provide protection against unexpected drops. Die-Cast Aluminium Frame Magnetic Base 1 x 90° & 1 x 180° Vials & 1 x 180° Rotating Vial Adjustable Vial 1 Year Guarantee Die-Cast Aluminium Frame Magnetic Base 1 x 90° & 1 x 180° Vials & 1 x 180° Rotating Vial Adjustable Vial 1 Year Guarantee