5 vintage pieces of industrial heavy retailer glass instrument covers

We recently purchased a bunch of industrial stuff from a mill that retailer closed down in North Carolina. This lot is 5 pieces of heavy industrial glass....four of them are domes that go over instruments and the fifth piece is a slice of a glass tube without a top or a bottom. The glass is a quarter of an inch thick and the pieces measure about 4.25 inches across. The sides of the domes are 3 inches tall.

The glass was well wrapped and stored and they are in good condition. There are a few small flea bites along the inside rim that looks like they came from the glass being cut.