Regarding shipping to EU, measuring equipment should be free from import duties (other than tax).
Please clearly indicate on the shipping form it is an "instrument for measuring electrical quantities."
I do not know if the specific clauses are the same in the EU. In the Netherlands (at least) it should fall under
TARIC
SECTION XVIII - Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof (chapter 90 - 92)
CHAPTER 90 - OPTICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION, MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; PARTS AND ACCESSORIES THEREOF
9030 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