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| More topics under "G01 - Measuring; Testing" (2,797,813) |
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| G01B - Measuring length, thickness or similar linear dimensions; Measuring angles; Measuring areas; Measuring irregularities of surfaces or contours (201,963) | | G01C - Measuring distances, levels or bearings; Surveying; Navigation; Gyroscopic instruments; Photogrammetry or videogrammetry (123,698) | | G01D - Measuring not specially adapted for a specific variable; Arrangements for measuring two or more variables not covered by a single other subclass; Tariff metering apparatus; Transferring or transducing arrangements not specially adapted for a specific variable; Measuring or testing not otherwise provided for (96,489) | | G01F - Measuring volume, volume flow, mass flow, or liquid level; Metering by volume (112,972) | | G01G - Weighing (42,456) | | G01H - Measurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves (18,576) | | G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infra-red, visible or ultra-violet light; Colorimetry; Radiation pyrometry (83,898) | | G01K - Measuring temperature; Measuring quantity of heat; Thermally-sensitive elements not otherwise provided for (60,306) | | G01L - Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure (100,409) | | G01M - Testing static or dynamic balance of machines or structures; Testing of structures or apparatus, not otherwise provided for (114,614) | | G01N - Investigating or analysing materials by determining their chemical or physical properties (1,067,355) | | G01P - Measuring linear or angular speed, acceleration, deceleration or shock; Indicating presence or absence of movement; indicating direction of movement (62,811) | | G01Q - Scanning-probe techniques or apparatus; Applications of scanning-probe techniques, e.g. scanning-probe microscopy [spm] (22,656) | | G01R - Measuring electric variables; Measuring magnetic variables (357,664) | | G01S - Radio direction-finding; Radio navigation; Determining distance or velocity by use of radio waves; Locating or presence-detecting by use of the reflection or reradiation of radio waves; Analogous arrangements using other waves (209,854) | | G01T - Measurement of nuclear or x-radiation (37,117) | | G01V - Geophysics; Gravitational measurements; Detecting masses or objects; Tags (78,688) | | G01W - Meteorology (6,287) |
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