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Diffraktionsgaller på glasplatta
Glass plate with three diffraction gratings of different number of lines for quantitative diffraction experiments. Diameter: 40 mm Thickness: 1.5 mm Surface: 25 x 7.5 mm eachNumber of lines: 50, 100, 200 / mm Gratings pitch: 20, 10, 5 µm Precision: <1 µm