[ SCIENTIFIC APPARATUS FOR MEASURING HIGH TEMPERATURE AND HIGH VACUUM CONDITIONS IN THE LABORATORY; TESTING APPARATUS FOR TESTING HIGH TEMPERATURE AND HIGH VACUUM CONDITIONS IN THE LABORATORY; ELECTRONIC DEVICES, NAMELY, MICROSCOPES, LASERS FOR MEASURING PURPOSES, COMPUTERS; CONTROL DEVICES, NAMELY, ELECTRICAL INSULATORS; LABORATORY EQUIPMENT, NAMELY, CRUCIBLES, PROTECTIVE STORAGE TUBES AND PROTECTIVE RUBBER SLEEVES ]