Abstract

An interferometer for the absolute measurement of the length of end standards is described in which the optical path difference introduced between the interfering beams is only half the length of the gauge. This permits the direct measurement of gauge blocks up to 1 meter long with the isotope sources currently available. Other advantages of the instrument are its relatively compact layout and simplicity of operation.

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  1. F. H. Rolt, Engineering 144, 162 (1937).
  2. W. Kosters, Z. Feinmechanik 34, 55 (1926).
  3. J. H. Dowell, Brit. Patents No. 367,860 and 555,672.
  4. J. J. Hunzinger, Rev, opt. 36, 285 (1957).
  5. C. Candler, Modern Interferometers (Hilger and Watts, London, 1951) p. 202.
  6. K. M. Baird and K. H. Hart, J. Opt. Soc. Am. 46, 304 (1956).

Baird, K. M.

K. M. Baird and K. H. Hart, J. Opt. Soc. Am. 46, 304 (1956).

Candler, C.

C. Candler, Modern Interferometers (Hilger and Watts, London, 1951) p. 202.

Dowell, J. H.

J. H. Dowell, Brit. Patents No. 367,860 and 555,672.

Hart, K. H.

K. M. Baird and K. H. Hart, J. Opt. Soc. Am. 46, 304 (1956).

Hunzinger, J. J.

J. J. Hunzinger, Rev, opt. 36, 285 (1957).

Kosters, W.

W. Kosters, Z. Feinmechanik 34, 55 (1926).

Rolt, F. H.

F. H. Rolt, Engineering 144, 162 (1937).

Other (6)

F. H. Rolt, Engineering 144, 162 (1937).

W. Kosters, Z. Feinmechanik 34, 55 (1926).

J. H. Dowell, Brit. Patents No. 367,860 and 555,672.

J. J. Hunzinger, Rev, opt. 36, 285 (1957).

C. Candler, Modern Interferometers (Hilger and Watts, London, 1951) p. 202.

K. M. Baird and K. H. Hart, J. Opt. Soc. Am. 46, 304 (1956).

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