Class 2651 Manufacture of measuring, testing, navigating and control equipment
This class comprises manufacture of search, detection, navigation, guidance, aeronautical, and nautical systems and instruments; automatic controls and regulators for applications, such as heating, air- conditioning, refrigeration and appliances; instruments and devices for measuring, displaying, indicating, recording, transmitting, and controlling temperature, humidity, pressure, vacuum, combustion, flow, level, viscosity, density, acidity, concentration, and rotation; totalizing (i.e., registering) fluid meters and counting devices; instruments for measuring and testing the characteristics of electricity and electrical signals; instruments and instrumentation systems for laboratory analysis of the chemical or physical composition or concentration of samples of solid, fluid, gaseous, or composite material; other measuring and testing instruments and parts thereof. The manufacture of non-electric measuring, testing and navigating equipment (except simple mechanical tools) is included here.
This class excludes:
- manufacture of telephone answering machines, see 263
- manufacture of irradiation equipment, see 267
- manufacture of optical positioning equipment, see 268
- manufacture of dictating machines, see 2817
- manufacture of weighing machinery (other than sensitive laboratory balances), levels, tape measures etc., see 2819
- manufacture of medical thermometers, see 3250
- installation of industrial process control equipment, see 3320
Class 2652 Manufacture of watches and clocks
This class excludes:
- manufacture of non-metal watch bands (textile, leather, plastic), see 1512
- manufacture of smartwatches , see 2630
- manufacture of watch bands of precious metal, see 3211
- manufacture of watch bands of non-precious metal, see 3212