Conclusions
It is recommended to use formulas (8)-(18) for a precise evaluation of dimension M for a large helix angle, and in general for any given parameters of an Archimedean-screw surface and any diameters of the measuring wire or roller.
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Literature cited
Instruction 72-58 for Testing Cylindrical Thread Gauges, Standartgiz (State Standards Press), Moscow (1959), pp. 18–19.
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Additional information
Translated from Izmeritel'naya Tekhnika, No. 11, pp. 32–35, November, 1966.
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Ivantsov, A.I. Problem of measuring threads with a large helix angle. Meas Tech 9, 1409–1413 (1966). https://doi.org/10.1007/BF00977799
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DOI: https://doi.org/10.1007/BF00977799