Plane Ruled Diffraction Grating, 1200 g/mm, 750 nm, 26.7°

Plane Ruled Diffraction Grating, 1200 grooves per mm, 750 nm nominal blaze wavelength (1st order Littrow), 26.7° nominal blaze angle

Plane Ruled Diffraction Grating, 1200 grooves per mm, 750 nm nominal blaze wavelength (1st order Littrow), 26.7° nominal blaze angle