Crossword Clues for ETALON

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Clue Source Date
Spectroscopic device with two flat parallel reflecting surfaces used to measure wavelengths Mirror Quiz 16 Feb 2025
Claw on base for optical instrument (6)
Stripping off, never mind getting a measuring device
Reflecting device producing interfering light beams The Times Concise 01 Jul 2015
Wavelength reader from eastern stock
Distance-measuring instrument
Interferometer
Standard: Fr.
An interferometer.
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