On construction jobsites throughout the world, contractors rely on the spirit level to make sure surfaces are truly flat (horizontal) or plumb (vertical). This type of level—so named because it contains a vial of alcohol (spirit) with a bubble in it—has been used for centuries and remains very popular.
Since 1919, Mukwonago, WI-based EMPIRE Level has been producing all types of spirit levels, including those with a digital readout. The company also manufactures squares (framing, T, T-bevel), marking and layout products, safety and utility tape, and measuring devices like calipers.