| IPC 7 English version |
| G01C-G01C01738 |
G01C 19/00 - G01C 25/00  |
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| SECTION G – PHYSICS |
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| G 01 | MEASURING (counting G06M); TESTING |
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| G 01 C | MEASURING DISTANCES, LEVELS, OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY (measuring dimensions or angles of objects G01B; measuring liquid level G01F; measuring intensity or direction of magnetic fields, other than the earth's field, in general G01R; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effect, propagation time, of radio waves, analogous arrangements using other waves G01S; optical systems therefor G02B; maps, globes G09B) |
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| Notes |
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| (1) | In this subclass, the following term is used with the meaning indicated: |
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| – | "navigation" means determining the position and course of land vehicles, ships, aircraft, and space vehicles. |
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| (2) | Attention is drawn to the Notes following the title of class G01. |
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| Subclass Index |
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| MEASURING INSTRUMENTS |
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| For measuring angles; inclinations |
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| For measuring distances; heights or levels |
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| Compasses; gyroscopes; other navigation instruments |
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| Other surveying instruments |
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| Combined instruments |
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| Manufacture, calibrating |
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| TRACING PROFILES |
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| PHOTOGRAMMETRY |
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| SURVEYING OPEN WATER |
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1/ | 00 | Measuring angles (in compasses G01C 17/00) |
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1/ | 02 | . | Theodolites |
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1/ | 04 | . | . | combined with cameras |
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1/ | 06 | . | . | Arrangements for reading scales |
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1/ | 08 | . | Sextants |
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1/ | 10 | . | . | including an artificial horizon (G01C 1/14 takes precedence; artificial horizons per se G01C 15/14) |
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1/ | 12 | . | . | . | with a stabilised mirror (tilt compensation in general G12B) |
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1/ | 14 | . | . | Periscopic sextants (periscopes in general G02B 23/08) |
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3/ | 00 | Measuring distances in line of sight; Optical rangefinders (tapes, chains, or wheels for measuring length G01B; coupling rangefinders with operating parts of photographic apparatus G03B) |
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3/ | 02 | . | Details |
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3/ | 04 | . | . | Adaptation of rangefinders for combination with telescopes or binoculars (rangefinders coupled with focusing arrangements of cameras G03B 13/20) |
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3/ | 06 | . | . | Use of electric means to obtain final indication |
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3/ | 08 | . | . | . | Use of electric radiation detectors |
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3/ | 10 | . | using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument |
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3/ | 12 | . | . | with monocular observation at a single point, e.g. coincidence type (G01C 3/20 takes precedence) |
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3/ | 14 | . | . | with binocular observation at a single point, e.g. stereoscopic type (G01C 3/20 takes precedence) |
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3/ | 16 | . | . | . | Measuring marks |
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3/ | 18 | . | . | with one observation point at each end of the base (G01C 3/20 takes precedence) |
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3/ | 20 | . | . | with adaptation to the measurement of the height of an object |
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3/ | 22 | . | using a parallactic triangle with variable angles and a base of fixed length at, near, or formed by, the object |
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3/ | 24 | . | using a parallactic triangle with fixed angles and a base of variable length in the observation station, e.g. in the instrument |
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3/ | 26 | . | using a parallactic triangle with fixed angles and a base of variable length at, near, or formed by, the object |
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3/ | 28 | . | . | with provision for reduction of the distance into the horizontal plane |
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3/ | 30 | . | . | . | with adaptation to the measurement of the height of an object, e.g. tacheometers |
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3/ | 32 | . | by focusing the object, e.g. on a ground glass screen |
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5/ | 00 | Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels (G01C 3/20, G01C 3/30 take precedence; tracing profiles G01C 7/00; levels indicating inclination at a single point G01C 9/00) |
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5/ | 02 | . | involving automatic stabilisation of the line of sight (regulation of direction in general G05D 3/00; tilt compensation in general G12B) |
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5/ | 04 | . | Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points |
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5/ | 06 | . | by using barometric means (barometers per se G01L) |
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7/ | 00 | Tracing profiles (by photogrammetry G01C 11/00) |
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7/ | 02 | . | of land surfaces |
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7/ | 04 | . | . | involving a vehicle which moves along the profile to be traced |
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7/ | 06 | . | of cavities, e.g. tunnels (survey of wells E21B 47/00) |
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9/ | 00 | Measuring inclination, e.g. by clinometers, by levels |
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9/ | 02 | . | Details |
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9/ | 04 | . | . | Transmission means between sensing element and final indicator for giving an enlarged reading |
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9/ | 06 | . | . | Electric or photoelectric indication or reading means |
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9/ | 08 | . | . | Means for compensating acceleration forces due to movement of instrument |
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9/ | 10 | . | by using rolling bodies |
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9/ | 12 | . | by using a single pendulum (plumb lines G01C 15/10) |
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9/ | 14 | . | . | movable in more than one direction |
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9/ | 16 | . | by using more than one pendulum |
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9/ | 18 | . | by using liquids |
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9/ | 20 | . | . | the indication being based on the inclination of the surface of a liquid relative to its container |
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9/ | 22 | . | . | . | with interconnected containers in fixed relation to each other |
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9/ | 24 | . | . | in closed containers partially filled with liquid so as to leave a gas bubble |
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9/ | 26 | . | . | . | Details |
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9/ | 28 | . | . | . | . | Mountings |
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9/ | 30 | . | . | . | . | Means for adjusting dimensions of bubble |
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9/ | 32 | . | . | . | . | Means for facilitating the observation of the position of the bubble, e.g. illuminating means |
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9/ | 34 | . | . | . | of the tubular type, i.e. for indicating the level in one direction only |
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9/ | 36 | . | . | . | of the spherical type, i.e. for indicating the level in all directions |
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11/ | 00 | Photogrammetry; Photographic surveying (cameras combined with surveying instruments, e.g. with theodolite, G01C 1/00, G01C 3/00, G01C 5/00, G01C 9/00; surveying cameras G03B 37/00) |
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11/ | 02 | . | Picture-taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures |
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11/ | 04 | . | Interpretation of pictures |
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11/ | 06 | . | . | by comparison of two or more pictures of the same area |
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11/ | 08 | . | . | . | the pictures not being supported in the same relative position as when they were taken |
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11/ | 10 | . | . | . | . | using computers to control the position of the pictures (computers per se G06) |
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11/ | 12 | . | . | . | the pictures being supported in the same relative position as when they were taken |
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11/ | 14 | . | . | . | . | with optical projection (G01C 11/26 takes precedence) |
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11/ | 16 | . | . | . | . | . | in a common plane |
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11/ | 18 | . | . | . | . | . | . | involving scanning means |
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11/ | 20 | . | . | . | . | . | in separate planes |
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11/ | 22 | . | . | . | . | with mechanical projection (G01C 11/26 takes precedence) |
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11/ | 24 | . | . | . | . | with optical-mechanical projection (G01C 11/26 takes precedence) |
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11/ | 26 | . | . | . | . | using computers to control the position of the pictures (computers per se G06) |
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11/ | 28 | . | . | . | Special adaptation for recording picture point data, e.g. for profiles |
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11/ | 30 | . | . | by triangulation |
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11/ | 32 | . | . | . | Radial triangulation |
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11/ | 34 | . | . | . | Aerial triangulation |
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13/ | 00 | Surveying specially adapted to open water, e.g. sea, lake, river, canal (liquid level metering G01F; measuring liquid velocity G01P; determining existence or flow of underground water G01V) |
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15/ | 00 | Surveying instruments or accessories not provided for in groups G01C 1/00 to G01C 13/00 |
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15/ | 02 | . | Means for marking measuring points |
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15/ | 04 | . | . | Permanent marks; Boundary markers |
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15/ | 06 | . | . | Surveyors' staffs; Movable markers |
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15/ | 08 | . | . | . | Plumbing or registering staffs or markers over ground marks |
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15/ | 10 | . | Plumb lines |
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15/ | 12 | . | Instruments for setting out fixed angles, e.g. right angles |
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15/ | 14 | . | Artificial horizons (tilt compensation in general G12B 5/00) |
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17/ | 00 | Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes (using gyroscopic effect G01C 19/00; for geophysical or prospecting purposes G01V 3/00) |
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17/ | 02 | . | Magnetic compasses |
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17/ | 04 | . | . | with north-seeking magnetic elements, e.g. needles |
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17/ | 06 | . | . | . | Suspending magnetic elements |
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17/ | 08 | . | . | . | . | by flotation |
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17/ | 10 | . | . | . | Comparing observed direction with north indication |
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17/ | 12 | . | . | . | . | by sighting means, e.g. for surveyors' compasses |
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17/ | 14 | . | . | . | . | by reference marks, e.g. for ships' compasses |
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17/ | 16 | . | . | . | . | by clinometers, e.g. for determining dip or strike of geological strata |
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17/ | 18 | . | . | . | Supporting or suspending compasses, e.g. by gimbal, by flotation |
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17/ | 20 | . | . | . | Observing the compass card or needle |
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17/ | 22 | . | . | . | . | by projection |
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17/ | 24 | . | . | . | . | Illumination |
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17/ | 26 | . | . | . | . | using electric pick-offs for transmission to final indicator, e.g. photocell |
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17/ | 28 | . | . | Electromagnetic compasses (with north-seeking magnetic elements and having electric pick-offs G01C 17/26) |
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17/ | 30 | . | . | . | Earth-inductor compasses |
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17/ | 32 | . | . | . | Electron compasses |
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17/ | 34 | . | Sun- or astro-compasses |
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17/ | 36 | . | Repeaters for remote indication of readings of a master compass |
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17/ | 38 | . | Testing, calibrating, or compensating of compasses |
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 | G01C 19/00 - G01C 25/00 |
