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Optical Flats are used as a reference (test plate) against which the flatness of an unknown surface may be compared.. The secondary surfaces of our single surface flats are pitch polished to window quality for viewing the interference pattern. Each flat is serialized and includes a certificate of calibration and durable storage case. Optical Flats can be supplied with both side flatness. We can supply surface flatness up to lambda/10 and Size up to 150mm .
Material : Fused Silica or any specific material