Compact solid brass measure which quickly adjust to the required increments for rifle or pistol. Measures are accurate and simple to operate. Positive snap ring clicks off each increment of adjustment and holds cavity at desired volume. Measures 50-120 grains in 10 grain increments. *NOTE: Powder measures & flasks are to be used with Black Powder or an approved black powder substitute such as Pyrodex. All implements must be used in accordance with the instructions printed on their packaging and those found in our Safety & Instruction Manual. If you don’t have a manual for your Thompson/Center firearm they are available free by contacting the company or via download from our web site.