LARGE diffraction grating 20g/mm
Posted: Fri May 15, 2020 3:13 am
Two pieces of LARGE diffraction grating 20g/mm, about 10x10cm, with transparent protection covers.
Not sure how to use them, I guess they are Echelle gratings.
$50/piece + shipping
Sold as is.
Thank you all!
Not sure how to use them, I guess they are Echelle gratings.
$50/piece + shipping
Sold as is.
Thank you all!