Double Axis Diffraction Grating Material
Description
This material is the same as used in the prism glasses --13,500 lines per inch, double axis, holographic diffraction grating, but in 8" x 10" sheets.
Description
This material is the same as used in the prism glasses --13,500 lines per inch, double axis, holographic diffraction grating, but in 8" x 10" sheets.