… 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, …
Explanatory notes
… IONISING RADIATIONS These instruments and apparatus are used in scientific research, for industrial purposes … tubes (boron, boron trifluoride or hydrogen types, or using radioactive fissionable elements). (4) Radiation … categories : (a) Duddell oscillographs , in which a coil, usually consisting of a loop of taut wire with mirrors …