An unusual conversation piece made just as good or better than the originals of the 1830 and 1850. It tests the strength of various granulations and different production runs of black powder to learn which is the best and which is the weakest. To operate, the short barrel is loaded to the muzzle with black powder; the tester is fired after the indexing lever is turned over the muzzle. Upon firing, the indexing lever turns the little spring loaded wheel which indicates the relative strength of the powder. High quality and nicely engraved. Wood grips and, of course, it is a boxlock style frame. THIS PRODUCT CANNOT BE SHIPPED TO NEW JERSEY OR CANADA.