Section 16 MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THERE OF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORD ERS AND REPRODUCERS, AND PARTS AND ACCESSORIES OF SUCH ARTICLES 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 86 Machines and apparatus of a kind used solely or principally for the manufacture 84 86 40 Commodity Code Description 84 86 40 00 84 86 40 10 Apparatus for the projection or drawing of circuit patterns on sensitized semiconduct 84 86 40 90 Other