Plane Ruled Diffraction Grating, 600 g/mm, 1000 nm, 17.5°

Plane Ruled Diffraction Grating, 600 grooves per mm, 1000 nm nominal blaze wavelength (1st order Littrow), 17.5° nominal blaze angle

Plane Ruled Diffraction Grating, 600 grooves per mm, 1000 nm nominal blaze wavelength (1st order Littrow), 17.5° nominal blaze angle