Product Description
This precision grating was made for Jerrell-Ash by Bausch & Lomb. Much of the following information was taken from the nomenclature label fixed to the back of the grating substrate.
Grating size - 60 x 60 mm
Focal length - infinity
Grooves / mm - 295
Blazed at 270nm
Part number 11-060
Catalog number 985-30-40-18
Coating - Al (?)
The grating is in fair condition. There is some mottling of the coating over the entire surface. There are also some tiny blemishes in the grating here and there. No deep scratches. This is suitable for student experimentation. The grating includes the Jerrel-Ash holder shown in the photos.
Photo set 1648