Instrument Steriliser This is an Instrument Steriliser, made of nickel-plated metal. It consists of a boiler, a perforated tray, a lid, and foldable legs. It also has two detachable hooks that can be attached to the foldable handles of the tray to facilitate the extraction and handling of the tray from the boiler. The lid has two handles with rubber features. On the bottom of the boiler, "British Made" is stamped. 1900-1949