1,000 Lines/mm Linear Diffraction Grating Sheet [5 Feet x 6 Inch Roll] update_march2023 it looks like it's "frozen"

it looks like it's "frozen" motionless in place

6TPI Click here for 70-1/2"

10mm Bore Black Oxide C45 Carbon Steel with Set Screws for ISO 04C

and testing equipment

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1,000 Lines/mm Linear Diffraction Grating Sheet [5 Feet x 6 Inch Roll] update_march2023 it looks like it's "frozen"1,000 Lines mm Linear Diffraction Grating Sheet [5 Feet x 6 Inch Roll] Product Features Produced with the goal of minimizing noise ensuring you get a clear view of the color spectrum One 6 x 60 linear sheet with a single axis and 1,000 lines mm These sheets can be used over and over again, as long as they are kept clean and crinkle free You can directly view and analyze spectra from different gas tubes and other light sources with these large sheets