EPROUVETTE
Dictionary of Science, Literature and Art · 1842 · p. 16
In Gunnery, a machine for proving the strength of gunpowder. A small gun is attached to a frame, which is suspended from a horizontal rod, about which it oscillates like a pendulum. On the gun being fired, the recoil causes the frame to swing; and the force of the recoil is measured by the angle which the frame describes. In this manner the relative strength of different sorts of gunpowder is ascertained. [s. 421]
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