The Lyman® Mechanical Trigger Pull Gauge is a simple, accurate and cost-effective way to measure the weight of a gun's trigger pull. The gauge is made of tough machined aluminum and steel components and will stand up to years of use. The gauge features a rolling trigger shoe, “T” handle, a sliding indicator that holds the highest weight and a zero-adjustment wheel. The gauge reads from 0 to 12 pounds in 2-ounce increments and is also equipped with a hanging loop for storage. Made by Lyman.