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†9028; instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionising radiation Commodity Code Description 90 30 10 Instruments and apparatus for measuring or detecting ionizing 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 Other instruments and apparatus, specially designed for telecommunications (for example, crosstalk meters, gain measuring instruments, distortion factor meters, psophometers) 90 30 82 For measuring or checking semiconductor wafersor devices 90 30 84 Other, with a recording device 90 30 89 Other 90 30 90 Parts and accessories