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Description
Ronchi 72 LPMM 1" X 1"
The Ronchi Ruling pattern (also called a diffraction grating) consists of equally spaced alternating clear and opaque bars. The spatial frequency of the ruling is typically expressed in Line Pairs per MM or Line Pairs per Inch.
The pattern is printed in Chromium (OD > 3.0) on 1.5mm thick Soda Lime Glass and extend...
