2651Measuring Instruments, Testing Instruments, and Navigation Equipment Industry and

parts thereof. The manufacture of non-electrical measuring, testing and navigation equipment (except simple mechanical devices) is included in this subclass. This subclass also includes | manufacture of aircraft engine equipment; | manufacture of automotive emission testing equipment; | manufacture of meteorological equipment; | manufacture of physical property inspection and testing equipment; | manufacture of polygraph machines; | manufacture of radiation monitoring and detection equipment; | manufacture of survey equipment; | manufacture of glass thermometers containing liquid and bimetal (except medical thermometers); | manufacture of humidistats (humidity meters); | manufacture of hydraulic limit control equipment; | manufacture of fire control equipment and burners; | manufacture of spectrometers; | manufacture of wind meters (pneumatic gauges); | manufacture of usage measuring equipment, such as water, gas and electricity; | manufacture of flowmeters and calculating instruments; | manufacture of tally counters; | manufacture of mine detectors, signal generators and metal detectors; | manufacture of search, detection, aeronautical and nautical navigation equipment, including sonobuoys; manufacture of radar and radar equipment; | manufacture of global positioning system (GPS) equipment; | manufacture of environmental control equipment and automatic controllers for equipment; | manufacture of measuring and recording equipment (e.g. flight recorders); | manufacture of motion detector equipment; | manufacture of laboratory analysis equipment (e.g. blood analysis equipment); | manufacture of laboratory measuring instruments, scales, incubators, and various other laboratory equipment for measuring, testing, and so on; | manufacture of measuring instruments, test equipment, monitoring and control equipment with connectivity capabilities (internet of things); | manufacture of sensors and detection equipment, including fire and burglary alarm systems that send signals to control stations.