Plane Ruled Diffraction Grating, 300 g/mm, 300 nm, 2.5°

Plane Ruled Diffraction Grating, 300 grooves per mm, 300 nm nominal blaze wavelength (1st order Littrow), 2.5° nominal blaze angle

Plane Ruled Diffraction Grating, 300 grooves per mm, 300 nm nominal blaze wavelength (1st order Littrow), 2.5° nominal blaze angle