This powder measure dispenses charge after charge of powder with consistent accuracy to a fraction of a grain. The key to unfailing precision is the unique three slide adjustable cavity. Extra fine adjustments of width and depth provide consistent charges with almost any powder. A clear plastic 2400 grain reservoir resists chemical action and protects your powder from harmful light rays. An attached knocker assures a complete charge every time. Mount to your bench or any turret press. Includes a 7/8x14 thread adaptor for press or stand mounting.