In this gallery we show three O.A. Bremer Duplex Powder Measures, an early, a transitional, and a late model. Along with the duplex powder measures is a Bremer marked Re-Decapper. Interesting is the fact that the early model was made from tin with joints soldered together. Small changes occured, primarily in regard to mounting, powder charge adjustment, and powder lever screw, as he perfected his design with the final models being nickel plated and serial numbered.