Lasers, other than laser diodes; other optical appliances and instruments n.e.c. in this chapter

901310 Optical appliances and instruments; telescopic sights for fitting to arms; periscopes; telescopes designed to form parts of machines, appliances, instruments or apparatus of this chapter 901320 Lasers; other than laser diodes 901380 Optical devices, appliances and instruments; n.e.c. in heading no. 9013 901390 Optical appliances and instruments; parts and accessories for articles of heading no. 9013