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Old Eprouvette Pendulum

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The only real use of these eprouvettes is to check and verify the uniformity of a current manufacture of powder, where a certain course of operations is intended to be regularly pursued, and where the strength, tested by means of any instrument, should therefore be uniform.

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The Project Gutenberg EBook of Class Book for The School of Musketry Hythe, by E. C. Wilford Published 1861
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