Plane Ruled Diffraction Grating, 900 g/mm, 550 nm, 14.3°

Plane Ruled Diffraction Grating, 900 grooves per mm, 550 nm nominal blaze wavelength (1st order Littrow), 14.3° nominal blaze angle

Plane Ruled Diffraction Grating, 900 grooves per mm, 550 nm nominal blaze wavelength (1st order Littrow), 14.3° nominal blaze angle