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Supply Type
Manufacturer, Exporter, Supplier
Preferred Buyer From :
All over the world
Transmission Type 30 x 25 mm. available 15000 lines per inch. Plate covered with mounted in plastic frame. Diffraction Grating School quality 25 x 30 mm. 13400 lines per inch mounted in plastic frame. Transmission type 38 x 50 mm. available 15,000 lines per inch. Replica on glass plate covered with another glass plate.