The Empire 9 in. Magnetic Polycast torpedo level features durable Nn-conductive Polycast construction that insulates from heat, cold, and electricity. A magnetic edge provides strong holding force and durable acrylic vials provide plumb, level, and 45 degree readings that are accurate up to .001 in. The level is weather resistant for long-lasting use and resists marring or scratching the furniture or surfaces you work with.