Conclusions
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1.
Contactless methods of measuring hole diameters with one optical probe (perflectometer) can reduce the measurement error for small hole diameters (0.2–40 mm) to within ±1.4–1.9 μ.
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2.
Contactless methods of measuring hole diameters with two optical probes have the advantage of relative measurement and can reduce the error in measuring hole diameters to ±2 μ.
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Literature cited
Yu. V. Kolomiitsev, Author's Certificate, No. 279955, Byulleten' Izobretenii, No. 7 (1963).
Yu. V. Kolomiitsev, Author's Certificate, No. 153789, Byulleten' Izobretenii, No. 6 (1966).
É. P. Yanushkevich, Author's Certificate, No. 187353, Byulleten' Izobretenii, No. 20 (1966).
Additional information
Translated from Izmeritel'naya Tekhnika, No. 11, pp. 15–17, November, 1972.
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Danilevich, F.M., Sokolov, I.A. Methods of inspecting hole diameters with optical probes. Meas Tech 15, 1617–1619 (1972). https://doi.org/10.1007/BF00813375
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DOI: https://doi.org/10.1007/BF00813375