This measure is made of brass with five grain graduations, allowing measuring from 40 to 200 grains. A nicely knurled brass screw provides positive locking adjustment at any position
Caution — ALL TRESO FLASK SPOUTS AND POWDER MEASURES ARE TO BE USED ONLY FOR BLACK POWDER OR PYRODEX. The indicated charges are at best only approximate due to the different powder grain size and other variables. Black powder and Pyrodex are approximately equivalent by volume only, not by weight.