Section 18 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof 90 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof 90 30 Oscilloscopes, spectrum analysers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of heading 90.28; instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionis Commodity Code Description 90 30 10 Instruments and apparatus for measuring or detecting ionising radiations 90 30 20 Oscilloscopes and oscillographs 90 30 31 Multimeters without a recording device 90 30 32 Multimeters with a recording device 90 30 33 Other, without a recording device 90 30 39 Other, with a recording device 90 30 40 Measuring/checking instruments/apparatus for telecommunications 90 30 82 For measuring or checking semiconductor wafers or devices 90 30 84 Other, with a recording device 90 30 89 Other 90 30 90 Parts and accessories