Stanley 33-272 12-by-1/2-Inch Heavy-Duty Powerlock Engineer&rsquo;s Scale Tape Rule with Metal Case Die-cast metal case holds its own against rough handling Entire blade coated with heavy-duty Mylar polyester film for unbeatable durability Two-rivet, corrosion-resistant hook stands up to continuous use Special Tru-Zero hook does double-duty as a pivot for drawing circles and arcs Limited Lifetime Warranty