9017 (01/1988-..) Drawing, marking-out or mathematical calculating instruments, e.g. drafting machines, pantographs, protractors, drawing sets, slide rules, disc calculators, instruments for measuring length, for use in the hand, e.g. measuring rods and tapes, micrometres, callipers and other gauges, not elsewhere specified in chapter 90

90171000 (01/1997-12/1997) Drafting tables and machines, whether or not automatic (excl. units for automatic data processing equipment) 90171010 (01/1998-..) Plotters as drafting machines 90171090 (01/1998-..) Drafting tables and machines, whether or not automatic (excl. plotters) 90172005 (01/1998-..) Plotters as drawing or marking-out instruments 90172010 (01/2011-..) Drawing instruments (excl. drafting tables and machines, plotters) 90172011 (01/1988-12/2010) Drawing sets 90172019 (01/1998-12/2010) Drawing instruments (excl. drafting tables and machines, plotters and drawing sets) 90172030 (01/1988-12/1994) Marking-out instruments 90172031 (01/1995-12/2006) Marking-out instruments as pattern generating apparatus of a kind used for producing masks or reticles from photoresist coated substrates 90172039 (01/1998-..) Marking-out instruments 90172090 (01/1988-..) Mathematical calculating instruments, incl. slide rules, disc calculators and the like (excl. calculating machines) 90173000 (01/2011-..) Micrometers, callipers and gauges (excl. gauges without adjustable devices of subheading 9031.80) 90173010 (01/1988-12/2010) Micrometers and callipers 90173090 (01/1988-12/2010) Gauges (excl. gauges without adjustable devices) 90178010 (01/1988-..) Measuring rods and tapes and divided scales 90178090 (01/1988-..) Hand-held instruments for measuring length, n.e.s. 90179000 (01/2007-..) Parts and accessories for drawing, marking-out or mathematical calculating instruments and instruments for measuring length for use in the hand, n.e.s. 90179010 (01/1998-12/2006) Parts and accessories for marking-out instruments as pattern generating apparatus of a kind used for producing masks or reticles from photoresist coated substrates, n.e.s. 90179090 (01/1998-12/2006) Parts and accessories for drawing, marking-out or mathematical calculating instruments and instruments for measuring length for use in the hand, n.e.s. (excl. for marking-out instruments as pattern generating apparatus of a kind used for producing masks or reticles from photoresist coated substrates) 9018 Instruments and appliances used in medical, surgical, dental or veterinary sciences, incl. scintigraphic apparatus, other electro-medical apparatus and sight-testing instruments, n.e.s.