... in order to ensure that the nomenclature of the Common Customs Tariff is uniformly applied, provisions should be adopted for the tariff classification of digitizers for measuring geometrical dimensions (for example, surface areas, lengths) on graphic documents (for example, technical drawings, surveying documents, electronic circuit diagrams) via manual scanning using a detector which converts the analog values of the points or lines on the document into numerical coordinates, which are then transmitted, for their interpretation, to an automatic data processing machine linked with the digitizer;