| Subclass 01 | Clocks and alarm clocks |
| A0086 | Alarm clocks | R0208 | É0001 |
| A0198 | Astronomical clocks | H0059 | C0161 |
| C0471 | Clocks | H0058 | F0026 |
| C0472 | Clocks (Alarm –) | R0208 | É0001 |
| C0473 | Clocks (Astronomical –) | H0059 | C0161 |
| C0475 | Clocks (Geographical –) | H0061 | V0193 |
| G0082 | Geographical clocks | H0061 | V0193 |
| R0166 | Regulators [clocks] | R0144 | O0046 |
| Subclass 02 | Watches and wrist watches |
| A0087 | Alarm watches | M0298 | C0227 |
| C0372 | Chronograph watches | M0296 | K0666 |
| P0155 | Pendant watches | M0297 | F0349 |
| W0065 | Watches | M0285 | O0051 |
| W0066 | Watches (Alarm –) | M0298 | C0227 |
| W0069 | Watches (Wrist –) | M0295 | K0119 |
| W0230 | Wrist watches | M0295 | K0119 |
| Subclass 03 | Other time-measuring instruments |
| C0373 | Chronometers | C0539 | K0667 |
| C0374 | Chronometric counters | C0720 | I0002 |
| C0699 | Counters (Chronometric –) | C0720 | I0002 |
| E0025 | Egg timers [sand glasses] | S0003 | H0223 |
| H0268 | Hourglasses | S0003 | H0223 |
| M0148 | Metronomes | M0186 | M0150 |
| P0102 | Parking meters | P0104 | P0084 |
| S0855 | Sundials | C0041 | N0023 |
| T0207 | Timers [automatic] | M0230 | I0003 |
| Subclass 04 | Other measuring instruments, apparatus and devices |
| A0015 | Accelerometers | A0027 | G0187 |
| A0024 | Accumulators (Charge indicators for –) | I0035 | F0102 |
| A0027 | Acoumeters | A0040 | H0053 |
| A0029 | Acoustic measuring instruments | A0041 | A0091 |
| A0058 | Aerometers | A0062 | L0185 |
| A0097 | Alcoholometers | A0140 | S0424 |
| A0102 | Altimeters | A0169 | M0011 |
| A0105 | Ammeters | A0181 | A0123 |
| A0121 | Anemometers | A0196 | S0441 |
| A0197 | Assay balances | T0346 | K0459 |
| B0056 | Balances | P0246 | M0168 |
| B0057 | Balances (Assay –) | T0346 | K0459 |
| B0102 | Barometers | B0112 | B0025 |
| B0330 | Bobs (Plumb –) | F0133 | F0348 |
| B0612 | Butyrometers | B0573 | Z0081 |
| C0043 | Calipers | C0086 | K0031 |
| C0048 | Calorimeters | C0090 | H0273 |
| C0120 | Cards (Compass –) | R0257 | I0046 |
| C0305 | Charge indicators for accumulators | I0035 | F0102 |
| C0451 | Clinometers | C0620 | K0467 |
| C0572 | Comparators | C0697 | K0501 |
| C0573 | Compass cards | R0257 | I0046 |
| C0575 | Compasses (Marine –) | C0700 | T0253 |
| C0576 | Compasses [navigation] | B0439 | I0044 |
| C0633 | Content measuring apparatus for reservoirs | C0770 | T0053 |
| C0650 | Cooking indicators [kitchen] | C1046 | K0525 |
| C0767 | Cross-staffs [surveying] | E0242 | O0036 |
| C0807 | Cups (Measuring –) | R0117 | M0171 |
| D0042 | Densimeters | D0062 | S0202 |
| D0165 | Distance measuring apparatus | D0146 | T0184 |
| D0232 | Dosing foodstuffs (Appliances for –) | D0218 | É0021 |
| D0245 | Draft (Ship's –) measuring apparatus | T0216 | T0255 |
| D0321 | Droppers [other than for medical or laboratory purposes] | C0715 | C0143 |
| D0347 | Dynamometers | D0253 | D0051 |
| E0014 | Ebulliometers | E0009 | F0281 |
| E0015 | Echo sounders | S0297 | V0227 |
| E0044 | Electricity meters | C0724 | V0200 |
| F0019 | Fare recorders | E0178 | D0047 |
| F0020 | Fare registers | C0721 | D0048 |
| F0242 | Flowmeters | D0010 | H0272 |
| F0272 | Foot measuring devices | M0168 | L0049 |
| F0346 | Fuel-consumption indicators for vehicles | C0755 | Ü0060 |
| G0006 | Galvanometers | G0016 | G0010 |
| G0055 | Gas meters | C0719 | G0023 |
| G0062 | Gauges | J0021 | M0166 |
| G0063 | Gauges for agricultural products | C0087 | M0174 |
| G0065 | Gauges (Pressure –) | M0068 | M0029 |
| G0067 | Gauges (Water level –) | N0052 | V0270 |
| G0081 | Geodetic apparatus and instruments | G0072 | G0033 |
| G0141 | Goniometers | G0130 | S0543 |
| H0292 | Hygrometers | H0099 | H0189 |
| I0036 | Inclinometers | C0620 | K0467 |
| I0042 | Indicators (Charge –) for accumulators | I0035 | F0102 |
| K0027 | Kilometer recorders | C0726 | K0437 |
| L0013 | Lactometers | P0242 | T0204 |
| L0086 | Leads (Sounding –) | P0480 | M0182 |
| L0106 | Letter scales | P0243 | L0165 |
| L0114 | Levelling rods for surveyors | M0232 | S0483 |
| L0115 | Levels (Spirit –) | N0051 | L0201 |
| L0176 | Lines (Plumb –) | F0133 | F0348 |
| L0216 | Logs (Ships' –) | L0181 | T0254 |
| L0244 | Luxmeters | L0218 | M0092 |
| M0034 | Manometers | M0068 | M0029 |
| M0046 | Marine compasses | C0700 | T0253 |
| M0100 | Measures (Slide –) | P0284 | T0359 |
| M0101 | Measuring cups | R0117 | M0171 |
| M0102 | Measuring devices (Foot –) | M0168 | L0049 |
| M0104 | Measuring instruments for tailors | M0173 | M0175 |
| M0105 | Measuring instruments [other than for measuring time] | M0170 | M0179 |
| M0106 | Measuring spoons | C1033 | M0177 |
| M0108 | Measuring tapes | M0184 | M0186 |
| M0109 | Measuring vessels [household] | M0172 | H0135 |
| M0145 | Meter tapes | M0184 | M0186 |
| M0146 | Meters (Gas –) | C0719 | G0023 |
| M0147 | Meters (Water –) | C0723 | V0260 |
| M0154 | Micrometer gauges | P0025 | M0203 |
| M0155 | Micrometers | M0207 | M0202 |
| M0164 | Mileage recorders | C0726 | K0437 |
| M0165 | Mileometers | C0726 | K0437 |
| M0171 | Milliammeters | M0220 | M0209 |
| O0006 | Octants | O0009 | O0007 |
| O0007 | Odometers | O0010 | K0260 |
| O0013 | Ohmmeters | O0021 | E0143 |
| P0277 | Planimeters | P0426 | P0188 |
| P0317 | Plates (Surface –) | M0080 | L0035 |
| P0342 | Plumb lines | F0133 | F0348 |
| P0359 | Polarimeters | P0564 | P0203 |
| P0442 | Pressure gauges | M0068 | M0029 |
| P0443 | Pressure gauges (Tyre –) | P0773 | K0262 |
| P0459 | Probes (Ultrasonic –) | S0294 | U0017 |
| P0534 | Pyrometers | P0846 | P0173 |
| R0048 | Radiometers | R0035 | S0190 |
| R0075 | Rain gauges | P0491 | C0098 |
| R0081 | Range finders | T0130 | T0236 |
| R0117 | Recorders (Fare –) | E0178 | D0047 |
| R0121 | Recording meters for telephone charges | C0727 | T0224 |
| R0191 | Reservoirs (Content measuring apparatus for –) | C0770 | T0053 |
| R0201 | Revolution counters | C0718 | F0262 |
| R0236 | Road marking apparatus | M0095 | U0054 |
| R0255 | Rods (Levelling –) for surveyors | M0232 | S0483 |
| R0304 | Rules for measuring | M0185 | V0278 |
| S0083 | Scales | B0052 | M0185 |
| S0084 | Scales [for weighing people] | P0244 | M0169 |
| S0085 | Scales (Letter –) | P0243 | L0165 |
| S0169 | Seismographs | S0261 | S0324 |
| S0170 | Seismometers | S0262 | S0325 |
| S0205 | Sextants | S0219 | S0425 |
| S0273 | Ship's draft measuring apparatus | T0216 | T0255 |
| S0275 | Ships' logs | L0181 | T0254 |
| S0466 | Slide measures | P0284 | T0359 |
| S0533 | Sonometers [measuring apparatus] | S0303 | S0519 |
| S0541 | Sounders (Echo –) | S0297 | V0227 |
| S0542 | Sounding leads | P0480 | M0182 |
| S0570 | Spectrophotometers | S0346 | S0477 |
| S0572 | Speedometers | V0139 | S0054 |
| S0588 | Spirit levels | N0051 | L0201 |
| S0602 | Spoons (Measuring –) | C1033 | M0177 |
| S0633 | Squares (Surveyors' optical –) | E0242 | O0036 |
| S0717 | Steelyards | B0053 | T0361 |
| S0875 | Surface plates | M0080 | L0035 |
| S0883 | Surveying instruments | A0298 | F0293 |
| S0884 | Surveying rods | A0299 | F0294 |
| S0885 | Surveyors' optical squares | E0242 | O0036 |
| T0038 | Tacheometers | T0064 | G0186 |
| T0040 | Tachometers | T0066 | F0263 |
| T0047 | Tailors (Measuring instruments for –) | M0173 | M0175 |
| T0067 | Tape measures | R0302 | M0189 |
| T0069 | Tape-measure cases | G0010 | M0187 |
| T0088 | Taximeters | T0115 | T0109 |
| T0111 | Telemeters | T0130 | T0236 |
| T0115 | Telephone charges (Recording meters for –) | C0727 | T0224 |
| T0138 | Temperature gauges | T0151 | H0277 |
| T0172 | Theodolites | T0193 | T0257 |
| T0176 | Thermometers [including medical thermometers] | T0196 | T0268 |
| T0220 | Tire pressure gauges | P0773 | K0262 |
| T0465 | Typometers | T0444 | N0104 |
| U0002 | Ultrasonic probes | S0294 | U0017 |
| V0005 | Vacuum gauges | V0109 | V0072 |
| V0020 | Variometers | V0026 | V0024 |
| V0067 | Verniers | V0067 | N0054 |
| V0069 | Vessels (Measuring –) [household] | M0172 | H0135 |
| V0090 | Viscosimeters | V0130 | V0228 |
| V0094 | Voltmeters | V0177 | V0272 |
| W0080 | Water hardness measuring instruments | H0097 | V0253 |
| W0085 | Water level gauges | N0052 | V0270 |
| W0086 | Water meters | C0723 | V0260 |
| W0106 | Wattmeters | W0008 | W0002 |
| W0107 | Wavemeters | O0032 | H0289 |
| W0124 | Weighing apparatus and instruments | P0241 | S0193 |
| W0125 | Weighing machines | B0130 | S0192 |
| W0128 | Weights [for scales] | P0523 | S0196 |
| Y0002 | Yardsticks | Y0004 | Y0001 |
| Subclass 05 | Instruments, apparatus and devices for checking, security or testing |
| A0044 | Adjusting apparatus for vehicle headlights | R0139 | J0014 |
| A0088 | Alarms (Burglar –) | A0379 | B0085 |
| A0089 | Alarms (Fire –) | A0380 | T0488 |
| A0090 | Alarms indicating water shortage in boilers | A0378 | B0166 |
| A0091 | Alarms (Theft –) | A0129 | L0223 |
| A0187 | Arresters (Lightning –) | P0100 | V0203 |
| B0014 | Baby monitoring apparatus | A0130 | B0099 |
| B0335 | Boiler regulators | R0146 | B0167 |
| B0478 | Brake-testing machines | F0264 | F0140 |
| B0586 | Burglar alarms | A0379 | B0085 |
| C0068 | Candling eggs (Lamps for –) | L0035 | L0088 |
| C0312 | Checking apparatus | C0781 | E0148 |
| C0313 | Checking apparatus (Entry –) | C0784 | B0051 |
| C0476 | Clocks (Time –) | H0060 | B0113 |
| C0606 | Conductors (Lightning –) | P0100 | V0203 |
| C0640 | Control photocells | C0284 | I0040 |
| C0641 | Controllers (Fall –) for parachutists | C0782 | E0195 |
| C0697 | Counterfeit money detectors | D0107 | H0061 |
| C0701 | Counters (Geiger-Muller –) | C0725 | G0030 |
| C0766 | Crossroad mirrors | M0238 | T0461 |
| D0062 | Detectors (Counterfeit money –) | D0107 | H0061 |
| D0063 | Detectors (Fire –) | D0115 | T0477 |
| D0064 | Detectors (Firedamp –) | G0180 | M0148 |
| D0065 | Detectors (Gas –) | D0109 | G0020 |
| D0067 | Detectors (Humidity –) | D0114 | N0032 |
| D0068 | Detectors (Lie –) | D0110 | H0104 |
| D0069 | Detectors (Ore –) | D0111 | É0046 |
| D0070 | Detectors (Radiation –) | D0113 | S0189 |
| D0071 | Detectors (Smoke –) | D0108 | F0389 |
| D0079 | Diagnostic testing apparatus other than for medical or laboratory purposes | D0133 | D0040 |
| D0180 | Divining rods | B0022 | O0106 |
| D0241 | Dowsing pendulums | P0216 | I0019 |
| E0028 | Eggs (Lamps for candling –) | L0035 | L0088 |
| E0091 | Entry checking apparatus | C0784 | B0051 |
| F0005 | Fabrics (Testing machines for woven –) | T0176 | T0275 |
| F0011 | Fall controllers for parachutists | C0782 | E0195 |
| F0114 | Fire alarms | A0380 | T0488 |
| F0116 | Fire detectors | D0115 | T0477 |
| F0132 | Firedamp detectors | G0180 | M0148 |
| F0186 | Flame controllers (Thermic –) | C0785 | T0264 |
| F0226 | Flow checking apparatus | C0783 | F0249 |
| F0244 | Fluid analyse apparatus | A0189 | F0245 |
| F0328 | Frost indicators [electric] | A0377 | E0068 |
| G0050 | Gas detectors | D0109 | G0020 |
| G0077 | Geiger-Muller counters | C0725 | G0030 |
| G0223 | Gyroscopes [aviation, navigation] | G0202 | F0267 |
| H0127 | Headlights (Adjusting apparatus for vehicle –) | R0139 | J0014 |
| H0149 | Heating installations (Regulators for –) | R0153 | S0219 |
| H0281 | Humidity detectors | D0114 | N0032 |
| H0289 | Hydrophones | H0096 | V0239 |
| H0293 | Hygrostats | H0100 | N0034 |
| L0038 | Lamps for candling eggs | L0035 | L0088 |
| L0128 | Lie detectors | D0110 | H0104 |
| L0161 | Lightning arresters | P0100 | V0203 |
| L0162 | Lightning conductors | P0100 | V0203 |
| L0163 | Lightning rods | P0100 | V0203 |
| M0194 | Mirrors (Crossroad –) | M0238 | T0461 |
| M0283 | Movement sensors | D0112 | M0267 |
| O0036 | Ore detectors | D0111 | É0046 |
| O0059 | Oscillographs | O0079 | O0095 |
| O0060 | Oscilloscopes | O0080 | R0086 |
| P0094 | Parachutists (Fall controllers for –) | C0782 | E0195 |
| P0192 | Photocells (Control –) | C0284 | I0040 |
| P0202 | Photometers [checking apparatus] | P0270 | F0164 |
| P0362 | Poles (Tacheometric –) | M0233 | T0005 |
| P0373 | Pool coupon checking apparatus | C0776 | U0024 |
| R0032 | Radar apparatus | R0019 | R0001 |
| R0033 | Radiation detectors | D0113 | S0189 |
| R0165 | Regulators (Boiler –) | R0146 | B0167 |
| R0168 | Regulators for heating installations | R0153 | S0219 |
| R0256 | Rods (Lightning –) | P0100 | V0203 |
| S0174 | Sensors (Movement –) | D0112 | M0267 |
| S0489 | Smoke detectors | D0108 | F0389 |
| S0532 | Sonometers [checking apparatus] | S0302 | S0518 |
| S0641 | Staffs (Surveyors' –) | J0003 | F0295 |
| S0886 | Surveyors' staffs | J0003 | F0295 |
| T0039 | Tacheometric poles | M0233 | T0005 |
| T0161 | Testing apparatus (Diagnostic –) other than for medical or laboratory purposes | D0133 | D0040 |
| T0162 | Testing instruments | E0257 | T0276 |
| T0163 | Testing machines for woven fabrics | T0176 | T0275 |
| T0170 | Theft alarms | A0129 | L0223 |
| T0173 | Thermic flame controllers | C0785 | T0264 |
| T0178 | Thermostats | T0198 | T0270 |
| T0206 | Time clocks | H0060 | B0113 |
| W0089 | Water shortage (Alarms indicating –) in boilers | A0378 | B0166 |
| Subclass 06 | Signalling apparatus and devices |
| A0016 | Accident signalling devices | S0237 | B0016 |
| B0084 | Bands (Reflecting –) for the feet | B0093 | F0172 |
| B0169 | Beacons [aviation, navigation] | B0058 | J0061 |
| B0202 | Bells (Cycle –) | T0205 | K0265 |
| B0204 | Bells [electric] | S0299 | E0062 |
| B0496 | Breakdown triangles for motorists | T0361 | E0050 |
| B0583 | Buoys (Marker –) | B0404 | J0056 |
| B0595 | Bus stop signposts | P0711 | B0237 |
| C0235 | Catadioptric reflectors | C0264 | F0174 |
| C0336 | Chimes (Door –) | C0168 | H0086 |
| C0872 | Cycle bells | T0205 | K0265 |
| D0177 | Dividers (Swimming pool –) for swimming matches | B0405 | M0081 |
| D0192 | Dog whistles | C0528 | S0126 |
| D0206 | Door chimes | C0168 | H0086 |
| D0212 | Door knockers | M0107 | A0059 |
| F0257 | Fog signals | S0246 | K0578 |
| G0020 | Gantries (Signal –) | P0704 | J0059 |
| G0068 | Gavels | M0106 | E0151 |
| H0246 | Horns (Vehicle –) | A0381 | K0699 |
| H0247 | Horns (Warning –) | C0809 | F0183 |
| K0070 | Knockers (Door –) | M0107 | A0059 |
| L0047 | Lamps (Signal –) | L0043 | J0068 |
| L0156 | Lighthouses | P0250 | V0192 |
| L0165 | Lights (Traffic –) | F0090 | F0265 |
| L0240 | Luminous road signs | B0368 | F0283 |
| M0048 | Marker buoys | B0404 | J0056 |
| M0052 | Markers for ski slopes | S0248 | S0121 |
| M0055 | Marking devices (Road- –) | B0059 | U0055 |
| M0166 | Milestones | B0367 | M0167 |
| R0066 | Railway signal discs | D0158 | V0052 |
| R0067 | Railway signals [fixed] | S0247 | V0051 |
| R0143 | Reflecting bands for the feet | B0093 | F0172 |
| R0238 | Road signals | S0249 | U0051 |
| R0240 | Road-marking devices | B0059 | U0055 |
| S0173 | Semaphores | S0154 | S0357 |
| S0366 | Signal bells | S0300 | J0057 |
| S0367 | Signal gantries | P0704 | J0059 |
| S0368 | Signal lamps | L0043 | J0068 |
| S0369 | Signal (Railway –) [fixed] | S0247 | V0051 |
| S0370 | Signalling devices (Accident –) | S0237 | B0016 |
| S0374 | Signals (Fog –) | S0246 | K0578 |
| S0375 | Signals (Road –) | S0249 | U0051 |
| S0378 | Signposts (Bus stop –) | P0711 | B0237 |
| S0381 | Signs (Traffic –) | P0041 | F0264 |
| S0401 | Sirens | S0260 | S0484 |
| S0416 | Ski slopes (Markers for –) | S0248 | S0121 |
| S0903 | Swimming pool dividers for swimming matches | B0405 | M0081 |
| T0136 | Tell-tale lights | V0182 | M0144 |
| T0310 | Traffic lights | F0090 | F0265 |
| T0311 | Traffic signs | P0041 | F0264 |
| T0361 | Triangles (Breakdown –) for motorists | T0361 | E0050 |
| V0033 | Vehicle horns | A0381 | K0699 |
| W0033 | Warning horns | C0809 | F0183 |
| W0154 | Whistles | S0233 | S0124 |
| W0155 | Whistles (Dog –) | C0528 | S0126 |
| Subclass 07 | Casings, dials, hands and all other parts and accessories of instruments for measuring, checking and signalling |
| B0106 | Barrels [clocks and watches] | B0110 | O0039 |
| B0417 | Bows (Pocket-watch –) | A0221 | Z0065 |
| B0454 | Bracelets (Clasps for watch –) | F0046 | K0117 |
| B0455 | Bracelets (Links for watch –) | C0318 | K0074 |
| B0456 | Bracelets (Watch –) | B0470 | O0047 |
| C0191 | Cases for watches | B0341 | O0049 |
| C0282 | Chains (Watch –) | C0309 | O0043 |
| C0423 | Clasps for watch bracelets | F0046 | K0117 |
| C0470 | Clock striking mechanisms | S0298 | F0025 |
| C0770 | Crowns (Winding –) for watches | C0899 | F0091 |
| D0080 | Dials for measuring, checking and signalling instruments | C0040 | M0170 |
| D0081 | Dials (Hands of –) | A0105 | O0044 |
| E0103 | Escapements [clocks and watches] | E0016 | G0017 |
| F0307 | Frames for movements [clocks and watches] | C0404 | K0253 |
| H0029 | Hairsprings for clocks and watches | S0349 | H0035 |
| H0087 | Hands of dials | A0105 | O0044 |
| H0171 | Hinge pins for watch cases | G0125 | A0043 |
| J0022 | Jewel settings [clocks and watches] | C0411 | O0040 |
| J0025 | Jewels for clock and watch movements | P0303 | O0041 |
| L0184 | Links for watch bracelets | C0318 | K0074 |
| M0284 | Movements for clocks and watches | M0357 | M0266 |
| M0285 | Movements (Frames for –) [clocks and watches] | C0404 | K0253 |
| P0157 | Pendulums for clocks | B0054 | I0020 |
| P0270 | Pivots for clocks and watches | P0393 | F0270 |
| P0352 | Pocket-watch bows | A0221 | Z0065 |
| P0355 | Pointers (Indicating –) | A0110 | M0282 |
| R0218 | Rims (Watch –) | L0208 | K0118 |
| S0620 | Springs (Watch –) | R0199 | O0045 |
| S0804 | Straps (Wrist watch –) | B0470 | O0047 |
| S0819 | Striking mechanisms (Clock –) | S0298 | F0025 |
| W0057 | Watch bracelets | B0470 | O0047 |
| W0058 | Watch cases (Hinge pins for –) | G0125 | A0043 |
| W0059 | Watch chains | C0309 | O0043 |
| W0060 | Watch crystals | V0079 | O0050 |
| W0061 | Watch dials | C0039 | O0042 |
| W0062 | Watch glasses | V0079 | O0050 |
| W0063 | Watch rims | L0208 | K0118 |
| W0064 | Watch springs | R0199 | O0045 |
| W0067 | Watches (Cases for –) | B0341 | O0049 |
| W0068 | Watches (Winders for –) | R0161 | O0038 |
| W0071 | Watch-strap clasps | F0046 | K0117 |
| W0072 | Watchstrap links | M0025 | O0048 |
| W0165 | Winders for watches | R0161 | O0038 |
| W0166 | Winding crowns for watches | C0899 | F0091 |
| W0229 | Wrist watch straps | B0470 | O0047 |
| Subclass 99 | Miscellaneous |
| WIPO Locarno Classification - Class 10 |