Plane Ruled Diffraction Grating, 1800 g/mm, 250 nm, 13°

Plane Ruled Diffraction Grating, 1800 grooves per mm, 250 nm nominal blaze wavelength (1st order Littrow), 13° nominal blaze angle

Plane Ruled Diffraction Grating, 1800 grooves per mm, 250 nm nominal blaze wavelength (1st order Littrow), 13° nominal blaze angle