Section XVIII — Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof
National subdivision
90314
Other optical instruments and appliances:
Common commodities
Optical surface tester for semiconductor materialsProfile projector for precision parts inspectionInterferometer for optics quality controlVisual checking appliance for manufactured componentsSemiconductor material optical comparatorInspection system for micromechanical partsOptical device for geometric dimensioning and tolerancingProfile measurement instrument for engineering productsQuality control system using optical principlesLens-based inspection equipment for precision parts