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Diaphragm with 4 Multiple Slits and Gratings
Diaphragm with 3 ruled gratings
Diaphragm with 2 cross gratings
Set of 5 Slit and Hole Diaphragms
Diaphragm with 3 Double Slits of Different Widths
Diaphragm with 4 Double Slits of Different Spacings