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April 22, 2014 Which Result is “Right”?

What accuracy can be achieved with an Interferometer? Instrument correlation sets a performance base line for metrology instruments.  When parts are manufactured and shipped, correlation between vendor and customer is expected.  If metrology systems do not correlate arguments ensue regarding who is right. Several years ago I received a call from a quality manager.  He… read more »

March 21, 2014 Nothing lasts forever: Interferometer Upgrades

Summary The main culprit to interferometer failure is a computer crash due to drive failure. The main cost is often lost production due to down time. Planned upgrades of production systems can save hundreds of thousands of dollars in lost production. After 10 years it is best to plan an upgrade of all systems when… read more »

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