Looks like a bunch of different micro wave equipment, not any serial production units, but prototype or experimental setup materials.
There seem to be some vacuum equipment too, the three steel tube with flanges in the box for example. The discs and the aluminium holder looks like an evaporation target.
So to me it looks like some vacuum equipment from a physics department or a high tech company.
Nice screen printed circuit boards on white alumina. A lot of work to clean it up from all the metal cases.
I would scrap the most of it, but the modular microwave units that are factory built I would check on eBay first for resale value. Don't open it up if you are going to sell it, it can destroy any trimming and calibration made on the units.
Examples of things possible to sell is the filter box and the grey box on top of the flanged tubes.
Göran