Regulating or controlling instruments and apparatus; automatic type

903210 Regulating or controlling instruments and apparatus; automatic type, thermostats 903220 Regulating or controlling instruments and apparatus; automatic, manostats 903281 Regulating or controlling instruments and apparatus; automatic, hydraulic or pneumatic 903289 Regulating or controlling instruments and apparatus; automatic, other than hydraulic or pneumatic 903290 Regulating or controlling instruments and apparatus; automatic, parts and accessories