Section XVIII — Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof
Heading
9107
Time switches with clock or watch movement or with synchronous motor.
Common commodities
Synchronous motor timer for shop windowsClock movement switch for industrial processesProgrammable time switch for water heatersElectromechanical timer for lighting circuitsAutomatic circuit breaker for staircasesPump timer with synchronous motorCoin-operated time switch for appliancesDefrost timer for refrigeration systemsIndustrial process timer equipped with clock movementTime switch for electric heating circuits