the United Nations Educational, Scientific and Cultural Organization, Protocol to the Agreement on the Importation of Educational… (1950)
“ Tools to be used for the maintenance, checking, gauging or repair of scientific instruments, provided these tools are imported at the same time as such instruments and apparatus or, if imported subsequently, that they are identifiable as intended for the specific instruments or apparatus previously admitted duty-free or entitled to duty-free entry, and further provided that tools of equivalent scientific value are not being manufactured in the country of importation. ”
