Ronchi ruling
= Ronchi ruling
{c}
A <Ronchi ruling> is a grating of alternating transparent and opaque parallel bands. A known band spacing can calibrate the scale of an <optical microscope> image.
= Ronchi ruling
{c}
A <Ronchi ruling> is a grating of alternating transparent and opaque parallel bands. A known band spacing can calibrate the scale of an <optical microscope> image.