Parts and accessories of automatic regulating or controlling instruments and apparatus
Tariff Classification
section 18
Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof
chapter 90
Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof
90.32
Automatic regulating or controlling instruments and apparatus: