engleski

Modification Of Kosters Primary Gauge Block Interferometer

By definition, meter is expressed as radiation of a laser in vacuum. This definition of meter has to be transferred to a physical artifact and gauge blocks are calibrated by means of interferometry for just that purpose. 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 interferometer, and preliminary measurements show substantial improvements in accuracy.

Length measurement; interferometry; optical measurement methods

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