Hello,
I own "ready to use" large sets for reflexion diffraction gratings.
They are very light & handmade by unit, though large dimensions (150mm x 150mm !): useful when targeting them at 20 or 30 meters !).
Each set consists in :
- wood black plate : lay 0
- mirror (2 or 3mm thick in glass) : lay 1
- grating (several patterns in polymer) : lay 2
- protection window (3mm glass) : lay 3
- special mechanical bonds (to "stick" the 3 optics layers 1 to 3)
- aluminium arm (U structure with hole for yoke in the center, and screw for adjusting orientation of the set).
These gratings reflexion sets can be either hang (just need a yoke) or just layed on a high floor, on the ground, on a shielve (thanks to autostanding structure arm)...
If anyone interested, you can pm me !
André