which finishes the experiment. The gradua- on the gun ; when the discharge takes place, the pro- civilization in all its splendor. Perhaps the most beautiful and really marvelous tion of the index into thousandths and ten-thou- jectile breaks the current at it, and the chronograph features of these… … can be placed near the APPARATUS FOB, MEASURING THE VELOCITY OF PROJECTILES. THE CHRONOGRAPH. gun without being inju- The apparatus which we riously affected by the discharge thereof. It requires no special know- are going to describe was constructed for the purpose mechanism consisting of a heavy…
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