… calculating instruments (for example, drafting machines, pantographs, protractors, drawing sets, slide rules, disc calculators); …
Explanatory notes
… calculating instruments (for example, drafting machines, pantographs, protractors, drawing sets, slide rules, disc … does not , however, include : (a) Mitre boxes and tools used in the graphic arts (e.g., chisels, gouges, … (dial type) , used to check the inside or outside tolerance of dimensions (e.g., reaming or rectification …