This is a 33066FL01-060R Float Glass Plane Ruled Diffraction Grating, sourced from the reputable vendor MKS/Newport. The grating, which is 12.5 x 25 x 6 mm in dimension, is a Blazed Ruled Reflective Grating, characterized by its rectangular base shape and unique physical data.
The grating's physical data includes a blaze wavelength of 250, 1200 grooves per millimeter, and a blaze angle of 8.6 degrees. The orientation vector is set at x=1, y=0, z=0, with the grating side being the front. The order is 1. The grating is made of soda lime ru clear material, and it comes with a coating of nwr 53-060r-2840-1-1 on the front.
The grating's geometry is also noteworthy, with a width of 12.5 mm, a height of 25 mm, and a thickness of 6 mm. The inner and outer radii are both zero, indicating a flat surface.
According to the vendor's website, this item is currently in stock and available for purchase. For more detailed information, you can refer to the provided weblink: https://www.newport.com/p/33066FL01-060R