Plane Ruled Diffraction Grating, 1200 g/mm, 1000 nm, 36.8°

Plane Ruled Diffraction Grating, 1200 grooves per mm, 1000 nm nominal blaze wavelength (1st order Littrow), 36.8° nominal blaze angle

Plane Ruled Diffraction Grating, 1200 grooves per mm, 1000 nm nominal blaze wavelength (1st order Littrow), 36.8° nominal blaze angle