Summary
The comparison of the results of measurements of Fabry and Perot master gages obtained by the photoelectric recording and by taking photographs of interference rings was carried out for a 100-mm-long master gage and for 47-, 80-, and 100-mm long quartz gages. In each case the result coincided with the difference remaining within measurement errors.
Advantages of the photoelectric recording method include: its objectivity, reliability, and the speed with which the result is obtained. In addition, the use of this method offers wide possibilities for using in the interference length-measurements of spectral lines from the part of the spectrum close to the infra-red region, which makes possible the extension of the range in which absolute measurements of gage blocks in wavelengths of light can be performed.
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Efremov, I.P. Photoelectric recording of interference fringes. Meas Tech 1, 630–633 (1958). https://doi.org/10.1007/BF00974446
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DOI: https://doi.org/10.1007/BF00974446