G
SECTION G — PHYSICS
  
INSTRUMENTS
 G01
MEASURING (counting G06M); TESTING
 G01C
MEASURING DISTANCES, LEVELS, OR BEARINGS, FOR SURVEYING OR 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; measuring by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; optical systems therefor G02B; maps, globes G09B)
 G01C

Note(s)

  1. In this subclass, the following term is used with the meaning indicated:
    • "navigation" means determining the position and course of land vehicles, ships, aircraft, and space vehicles.
  2. Attention is drawn to the Notes following the title of class G01.
 G01C 1/00
Measuring angles (in compasses G01C 17/00)
 G01C 1/02
·  Theodolites
 G01C 1/04
·  ·  combined with cameras
 G01C 1/06
·  ·  Arrangements for reading scales (in general G01D)
 G01C 1/08
·  Sextants
 G01C 1/10
·  ·  including an artificial horizon (G01C 1/14 takes precedence; artificial horizons per se G01C 15/14)
 G01C 1/12
·  ·  ·  with a stabilised mirror (tilt compensation in general G12B)
 G01C 1/14
·  ·  Periscopic sextants (periscopes in general G02B 23/08)
 G01C 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)
 G01C 3/02
·  Details
 G01C 3/04
·  ·  Adaptation of rangefinders for combination with telescopes or binoculars (rangefinders coupled with focusing arrangements of cameras G03B 13/20)
 G01C 3/06
·  ·  Use of electric means to obtain final indication
 G01C 3/08
·  ·  ·  Use of electric radiation detectors
 G01C 3/10
·  using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
 G01C 3/12
·  ·  with monocular observation at a single point, e.g. coincidence type (G01C 3/20 takes precedence)
 G01C 3/14
·  ·  with binocular observation at a single point, e.g. stereoscopic type (G01C 3/20 takes precedence)
 G01C 3/16
·  ·  ·  Measuring marks
 G01C 3/18
·  ·  with one observation point at each end of the base (G01C 3/20 takes precedence)
 G01C 3/20
·  ·  with adaptation to the measurement of the height of an object
 G01C 3/22
·  using a parallactic triangle with variable angles and a base of fixed length at, near, or formed by, the object
 G01C 3/24
·  using a parallactic triangle with fixed angles and a base of variable length in the observation station, e.g. in the instrument
 G01C 3/26
·  using a parallactic triangle with fixed angles and a base of variable length at, near, or formed by, the object
 G01C 3/28
·  ·  with provision for reduction of the distance into the horizontal plane
 G01C 3/30
·  ·  ·  with adaptation to the measurement of the height of an object, e.g. tacheometers
 G01C 3/32
·  by focusing the object, e.g. on a ground glass screen
 G01C 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)
 G01C 5/02
·  involving automatic stabilisation of the line of sight (regulation of direction in general G05D 3/00; tilt compensation in general G12B)
 G01C 5/04
·  Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points
 G01C 5/06
·  by using barometric means (barometers per se G01L)
 G01C 7/00
Tracing profiles (by photogrammetry G01C 11/00)
 G01C 7/02
·  of land surfaces
 G01C 7/04
·  ·  involving a vehicle which moves along the profile to be traced
 G01C 7/06
·  of cavities, e.g. tunnels (survey of wells E21B 47/00)
 G01C 9/00
Measuring inclination, e.g. by clinometers, by levels
 G01C 9/02
·  Details
 G01C 9/04
·  ·  Transmission means between sensing element and final indicator for giving an enlarged reading
 G01C 9/06
·  ·  Electric or photoelectric indication or reading means
 G01C 9/08
·  ·  Means for compensating acceleration forces due to movement of instrument
 G01C 9/10
·  by using rolling bodies
 G01C 9/12
·  by using a single pendulum (plumb lines G01C 15/10)
 G01C 9/14
·  ·  movable in more than one direction
 G01C 9/16
·  by using more than one pendulum
 G01C 9/18
·  by using liquids
 G01C 9/20
·  ·  the indication being based on the inclination of the surface of a liquid relative to its container
 G01C 9/22
·  ·  ·  with interconnected containers in fixed relation to each other
 G01C 9/24
·  ·  in closed containers partially filled with liquid so as to leave a gas bubble
 G01C 9/26
·  ·  ·  Details
 G01C 9/28
·  ·  ·  ·  Mountings
 G01C 9/30
·  ·  ·  ·  Means for adjusting dimensions of bubble
 G01C 9/32
·  ·  ·  ·  Means for facilitating the observation of the position of the bubble, e.g. illuminating means
 G01C 9/34
·  ·  ·  of the tubular type, i.e. for indicating the level in one direction only
 G01C 9/36
·  ·  ·  of the spherical type, i.e. for indicating the level in all directions
 G01C 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)
 G01C 11/02
·  Picture-taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
 G01C 11/04
·  Interpretation of pictures
 G01C 11/06
·  ·  by comparison of two or more pictures of the same area
 G01C 11/08
·  ·  ·  the pictures not being supported in the same relative position as when they were taken
 G01C 11/10
·  ·  ·  ·  using computers to control the position of the pictures (computers per se G06)
 G01C 11/12
·  ·  ·  the pictures being supported in the same relative position as when they were taken
 G01C 11/14
·  ·  ·  ·  with optical projection (G01C 11/26 takes precedence)
 G01C 11/16
·  ·  ·  ·  ·  in a common plane
 G01C 11/18
·  ·  ·  ·  ·  ·  involving scanning means
 G01C 11/20
·  ·  ·  ·  ·  in separate planes
 G01C 11/22
·  ·  ·  ·  with mechanical projection (G01C 11/26 takes precedence)
 G01C 11/24
·  ·  ·  ·  with optical-mechanical projection (G01C 11/26 takes precedence)
 G01C 11/26
·  ·  ·  ·  using computers to control the position of the pictures (computers per se G06)
 G01C 11/28
·  ·  ·  Special adaptation for recording picture point data, e.g. for profiles
 G01C 11/30
·  ·  by triangulation
 G01C 11/32
·  ·  ·  Radial triangulation
 G01C 11/34
·  ·  ·  Aerial triangulation
 G01C 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)
 G01C 15/00
Surveying instruments or accessories not provided for in groups G01C 1/00-G01C 13/00
 G01C 15/02
·  Means for marking measuring points
 G01C 15/04
·  ·  Permanent marks; Boundary markers
 G01C 15/06
·  ·  Surveyors' staffs; Movable markers
 G01C 15/08
·  ·  ·  Plumbing or registering staffs or markers over ground marks
 G01C 15/10
·  Plumb lines
 G01C 15/12
·  Instruments for setting out fixed angles, e.g. right angles
 G01C 15/14
·  Artificial horizons (tilt compensation in general G12B 5/00)
 G01C 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)
 G01C 17/02
·  Magnetic compasses
 G01C 17/04
·  ·  with north-seeking magnetic elements, e.g. needles
 G01C 17/06
·  ·  ·  Suspending magnetic elements
 G01C 17/08
·  ·  ·  ·  by flotation
 G01C 17/10
·  ·  ·  Comparing observed direction with north indication
 G01C 17/12
·  ·  ·  ·  by sighting means, e.g. for surveyors' compasses
 G01C 17/14
·  ·  ·  ·  by reference marks, e.g. for ships' compasses
 G01C 17/16
·  ·  ·  ·  by clinometers, e.g. for determining dip or strike of geological strata
 G01C 17/18
·  ·  ·  Supporting or suspending compasses, e.g. by gimbal, by flotation
 G01C 17/20
·  ·  ·  Observing the compass card or needle
 G01C 17/22
·  ·  ·  ·  by projection
 G01C 17/24
·  ·  ·  ·  Illumination
 G01C 17/26
·  ·  ·  ·  using electric pick-offs for transmission to final indicator, e.g. photocell
 G01C 17/28
·  ·  Electromagnetic compasses (with north-seeking magnetic elements and having electric pick-offs G01C 17/26)
 G01C 17/30
·  ·  ·  Earth-inductor compasses
 G01C 17/32
·  ·  ·  Electron compasses
 G01C 17/34
·  Sun- or astro-compasses
 G01C 17/36
·  Repeaters for remote indication of readings of a master compass
 G01C 17/38
·  Testing, calibrating, or compensating of compasses
 G01C 19/00
Gyroscopes; Turn-sensitive devices using gyroscopic effect, e.g. using gas, using electron beam
 G01C 19/02
·  Rotary gyroscopes
 G01C 19/04
·  ·  Details
 G01C 19/06
·  ·  ·  Rotors
 G01C 19/08
·  ·  ·  ·  electrically driven (G01C 19/14 takes precedence; dynamo-electric machines H02K)
 G01C 19/10
·  ·  ·  ·  ·  Power supply
 G01C 19/12
·  ·  ·  ·  fluid driven (G01C 19/14 takes precedence)
 G01C 19/14
·  ·  ·  ·  Fluid rotors
 G01C 19/16
·  ·  ·  Suspensions; Bearings (bearings in general F16C; balancing rotors G01M)
 G01C 19/18
·  ·  ·  ·  providing movement of rotor with respect to its rotational axes (G01C 19/20, G01C 19/24 take precedence)
 G01C 19/20
·  ·  ·  ·  in fluid
 G01C 19/22
·  ·  ·  ·  torsional
 G01C 19/24
·  ·  ·  ·  using magnetic or electrostatic fields
 G01C 19/26
·  ·  ·  Caging, i.e. immobilising moving parts, e.g. for transport (applicable to instruments in general G01D 11/20)
 G01C 19/28
·  ·  ·  Pick-offs, i.e. devices for taking off an indication of the displacement of the rotor axis
 G01C 19/30
·  ·  ·  Erection devices, i.e. devices for restoring rotor axis to a desired position (for instrument indicating the vertical G01C 19/46)
 G01C 19/32
·  ·  ·  Indicating or recording means specially adapted for rotary gyroscopes (in general G01D)
 G01C 19/34
·  ·  for indicating a direction in the horizontal plane, e.g. directional gyroscopes
 G01C 19/36
·  ·  ·  with north-seeking action by magnetic means, e.g. gyromagnetic compasses
 G01C 19/38
·  ·  ·  with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation
 G01C 19/40
·  ·  for control by signals from a master compass, i.e. repeater compasses
 G01C 19/42
·  ·  for indicating rate of turn; for integrating rate of turn
 G01C 19/44
·  ·  for indicating the vertical
 G01C 19/46
·  ·  ·  Erection devices for restoring rotor axis to a desired position
 G01C 19/48
·  ·  ·  ·  operating by electrical means (G01C 19/54 takes precedence)
 G01C 19/50
·  ·  ·  ·  operating by mechanical means (G01C 19/54 takes precedence)
 G01C 19/52
·  ·  ·  ·  operating by fluid means (G01C 19/54 takes precedence)
 G01C 19/54
·  ·  ·  ·  with correction for acceleration forces due to movement of instrument
 G01C 19/56
·  Turn-sensitive devices with vibrating masses, e.g. tuning fork
 G01C 19/58
·  Turn sensitive devices without moving masses  [3]
 G01C 19/60
·  ·  Electronic or nuclear magnetic resonance gyrometers (electronic or nuclear magnetic resonance arrangements in general G01R 33/20)  [3]
 G01C 19/62
·  ·  ·  with optical pumping  [3]
 G01C 19/64
·  ·  Laser gyrometers, e.g. ring laser gyrometers (ring lasers per se H01S 3/083)  [3]
 G01C 21/00
Navigation; Navigational instruments not provided for in preceding groups (measuring distance traversed on the ground by a vehicle G01C 22/00; measuring linear or angular speed or acceleration G01P)
 G01C 21/02
·  by astronomical means (G01C 21/24 takes precedence; measuring time by using position of the sun, moon, or stars G04B 49/00)
 G01C 21/04
·  by terrestrial means (G01C 21/24 takes precedence; marking of navigation route for ships B63B 51/00)
 G01C 21/06
·  ·  involving measuring of drift angle; involving correction for drift
 G01C 21/08
·  ·  involving use of the magnetic field of the earth
 G01C 21/10
·  by using measurement of speed or acceleration (G01C 21/24 takes precedence)
 G01C 21/12
·  ·  executed aboard the object being navigated; Dead reckoning
 G01C 21/14
·  ·  ·  by recording the course traversed by the object (G01C 21/16 takes precedence)
 G01C 21/16
·  ·  ·  by integrating acceleration or speed, i.e. inertial navigation
 G01C 21/18
·  ·  ·  ·  Stabilised platforms, e.g. by gyroscope
 G01C 21/20
·  Instruments for performing navigational calculations (G01C 21/24 takes precedence; computing in general G06)
 G01C 21/22
·  ·  Plotting boards (in general B43L)
 G01C 21/24
·  specially adapted for cosmonautical navigation
 G01C 22/00
Measuring distance traversed on the ground by vehicles, persons, animals, or other moving solid bodies, e.g. using odometers, using pedometers (counting mechanisms per se G06M)
 G01C 22/02
·  by conversion into electric waveforms and subsequent integration, e.g. using tachometer generator
 G01C 23/00
Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed, acceleration
 G01C 25/00
Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the preceding groups (testing, calibrating, or compensating compasses G01C 17/38)