Pyrometers with case

Case (bag)

— the presence of a case or bag in the delivery set of the device.

A hard case is called a case; it is relatively bulky, but provides good protection not only from pollution, but also from shock. Bags, on the other hand, are made of soft materials, they protect mainly from dust and dirt, but such a case can be folded compactly when not in use. Anyway, complete bags and cases are more convenient than impromptu packaging.