Plane Ruled Diffraction Grating, 600 g/mm, 1200 nm, 22°

Plane Ruled Diffraction Grating, 600 grooves per mm, 1200 nm nominal blaze wavelength (1st order Littrow), 22° nominal blaze angle

Plane Ruled Diffraction Grating, 600 grooves per mm, 1200 nm nominal blaze wavelength (1st order Littrow), 22° nominal blaze angle