Abstract
THE Bulletin de la Société d'Encouragement pour l'Industrie Nationale (November-December, 1919, No. 6) contains an article by M. Cellerier, of the Conservatoire des Arts et Métiers, on the verification of screw gauges, with particular reference to the methods advocated by Mr. Bingham Powell, who was engaged in the United States during the war as Inspector of Gauges and Standards for the British Ministry of Munitions. These methods related chiefly to the measurement of the full, effective, and core diameters; the verification of pitch was neglected until quite a late period of the war, owing to the lack of instruments possessing the requisite precision and rapidity.
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Verification of Screw Gauges for Munitions of War. Nature 105, 184–185 (1920). https://doi.org/10.1038/105184a0
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DOI: https://doi.org/10.1038/105184a0