engleski

Modification of a Zeiss Gauge Block Interferometer

Traceability of physical length to the SI unit of meter is realized by means of interferometry, and primary interferometers are used at the highest accuracy levels to perform calibration of national gauge block standards. These devices are very expensive, given the fact that they are manufactured on order and used almost exclusively by national measurement institutes. Therefore, LFSB decided to retrofit and modify an existing Zeiss gauge block interferometer, and preliminary measurements show substantial improvements in accuracy.

Gauge block calibration / Traceability / Optical Interferometry / Interferogram analysis

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