NIST

measurement devices; namely, certified samples of materials to be used in the calibration of measuring instruments; namely, metals, alloys, chemicals, minerals, fertilizers, botanicals, gases, biologicals, carbides, glasses, cements, trace elements, nuclear materials, isotopics, reference fuels, rubber materials, computer tapes, used for measurement, calibration and specific determination of the composition of said materials

publications; namely, pamphlets, brochures, magazines, journals and booklets pertaining to and in promotion of the certified samples of materials used in the calibration of measuring instruments