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WKM Student Grating Glass Or Diffraction Grating Glass 600 Lines I.e 15000 LPI GREATER NOIDA com/products/laboratory-aluminum-heating-mantle-for-flasks-with-temperature-controller-30x30x20-cm#product"Diffraction Grating Glass Brand: WKM Features: Student Grating Glass Or Diffraction Grating Glass 600 Lines I. e 15000 LPI Size: 63mm x 48mm Lines Per mm : 600 Lines Lines Per Inch: 15000LPI Best Price, Best Quality, Fast & Free Delivery Part Number: KTN488 Details: Student Grating Glass Or Diffraction Glass (for Engineering and Spectrometer) 100% Accurate Student Grating Glass Or Diffraction Glass, Best Quality. Package Dimensions: 2. 0 x 1. 2 x 0. 8