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Propeller control systems, aircraft
Calibrators, aileron balancing, aircraft
Pressure gauges and components, aircraft
Sensors, critical airflow
Cable tension regulators, aircraft
Pneumatic controls and actuators, compressed air equipment, aircraft
Hydraulic controls and actuators, hydraulic equipment, aircraft
Servo-controls, aircraft
Controls, mechanical and cable, aircraft
Landing equipment instrumentation, aircraft
Landing systems, automatic, aircraft
Oxygen control equipment, aircraft
Pressure control instruments, aircraft cabin
Recorders, engine life, aircraft
Fatigue load measuring equipment, aircraft
Watches and chronographs, aircraft
Battery packs, emergency, aircraft
Inertial guidance systems
Radio control systems for remote controlled aircraft/drones
Flight data recorders (black boxes), aircraft
Computers, data, and flight data systems, aircraft
Thrust meters, aircraft
Recorders, time-temperature, engine, aircraft
Fuel meters and gauges, aircraft
Fuel balancing and management systems, airborne, aircraft
Constant speed control units, aircraft
Throttle controls, aircraft
Strain and torque indicators, aircraft
Temperature indicators, external air, aircraft
Ice warning indicators, aircraft
Fault indicators, aircraft systems
Thrust indicators, jet engine, aircraft
Position indicators for aircraft equipment
Temperature indicators, jet engine, aircraft
Geodetic survey instruments and systems
Long distance range finding equipment, surveying
Levels, surveyors'
Levels, laser beam
Theodolites
Transit theodolites
Gyro-theodolites
Theodolites, laser
Tacheometers, surveying
Cross-staffs
Heliostats
Alidades
Altimeters, surveying
Chains, surveyors'
Arrows and plummets, surveyors'
Goniometers, surveying
Telemeters, surveyors'
Gradiometers, surveying
Geothermal measuring instruments and equipment
Seismic and geophysical survey instruments and equipment
Seismographs
Hypsometers and hypsographs
Clinometers
Tellurometers
Boning-rods
Plane-tables and surveyors' tripods
Gravity meters/gravimeters, gravimetric survey equipment
Photogrammetric and stereographic survey equipment
Magnetic variometers and terrestrial magnetometers
Declinometers and dip circles, surveying
Ranging rods, surveying
Probes for cone penetration tests (CPT), geotechnical investigation
Hydrographic survey equipment
Geotechnical instruments
Geotechnical rigs, multifunctional
Mineralogical survey equipment
Instruments and appliances for soil mechanics
Measuring equipment, hydrogeological
Measuring instruments, ground settlement
Locators, seismic, for underground installations
Surveying and alignment equipment, laser
Scanners, laser, three-dimensional (3D), for surveying
Beacons, surveying
Geographical information systems (GIS)
Amplifiers for geophysical and meteorological use
Wireline logging instruments
Locating equipment, magnetic, for underground installations
Phototheodolites
Parts and accessories, surveying and geodetic equipment
Compasses, gyroscopic
Compasses, magnetic
Compasses, remote indicating
Compasses, digital display
Compasses, marine
Compasses, aircraft
Radio compasses (automatic direction finders)
Compasses, astro
Compasses, hand-held
Compasses, lensatic
Compasses, surveyors
Compasses, miners'
Compasses, geologists'
Compasses for rally vehicles
Compasses for watch straps
Compass adjusting and calibrating instruments and accessories
Optical squares and parallel glass micrometers
