Lyman's mechanical trigger pull gauge is a simple, accurate and cost-effective way to measure the weight of your firearms trigger pull. Made of tough machined aluminum and steel components, the gauge will stand up to years of use. The gauge features a rolling trigger shoe, "T" handle, a sliding indicator that holds your 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.