* Size:65 X 50 mm
* Aperture size: 45 X 30 mm
Available in 100, 200, 300 and 600 lines per mm.
* The grating is protected by two glass plates 65 x 50 mm and bound together at edges.
* Grating area 45 x 30 mm.
* Available individually as TE215
* Available as set of four as TE215S