Plane Ruled Diffraction Grating, 1200 g/mm, 250 nm, 8.6°

Plane Ruled Diffraction Grating, 1200 grooves per mm, 250 nm nominal blaze wavelength (1st order Littrow), 8.6° nominal blaze angle

Plane Ruled Diffraction Grating, 1200 grooves per mm, 250 nm nominal blaze wavelength (1st order Littrow), 8.6° nominal blaze angle