#measuring_instrument__measuringinstrument__measuring_system__measuringsystem__measuring_device__measuringdevice  instrument that shows the extent or amount or quantity or degree of something
  supertype:  instrument  a device that requires skill for proper use
  subtype:  accelerometer  an instrument for measuring the acceleration of aircraft or rockets
  subtype:  actinometer  an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect)
  subtype:  algometer  device for measuring pain caused by pressure
  subtype:  altazimuth  an instrument that measures the altitude and azimuth of celestial bodies; used in navigation
  subtype:  altimeter  an instrument that measures the height above ground; used in navigation
     subtype:  hypsometer  an altimeter that uses the boiling point of water to determine land elevation
  subtype:  astrolabe  an early form of sextant
  subtype:  atmometer__evaporometer  an instrument that measures rate of evaporation of water
  subtype:  audiometer  an instrument used to measure the sensitivity of hearing
  subtype:  barometer  an instrument that measures atmospheric pressure
     subtype:  aneroid_barometer__aneroidbarometer__aneroid  a barometer that measures pressure without using fluids
     subtype:  barograph  a recording barometer; automatically records on paper the variations in atmospheric pressure
     subtype:  mercury_barometer__mercurybarometer  barometer that shows pressure by the height of a column of mercury
     subtype:  weatherglass  a simple barometer for indicating changes in atmospheric pressure
  subtype:  bolometer  an instrument that measures heat radiation; extremely sensitive
  subtype:  bubble_chamber  an instrument that records the tracks of ionizing particles
  subtype:  burette  measuring instrument consisting of a graduated glass tube with a tap at the bottom; used for titration
  subtype:  caliper__calipers__calliper__callipers__calliper  an instrument for measuring the distance between two points
     subtype:  inside_caliper  caliper for measuring inside dimensions (the size of a cavity or hole); points on its legs curve outward
     subtype:  micrometer_caliper__micrometer__micrometer_gauge  caliper for measuring small distances
     subtype:  odd-leg_caliper__oddlegcaliper  caliper having the points on its legs both curve in the same direction
     subtype:  outside_caliper__outsidecaliper  caliper for measuring outside dimensions; points on its legs curve inward
     subtype:  vernier_caliper__vernier_micrometer__verniermicrometer  a caliper with a vernier scale for very fine measurements
  subtype:  calorimeter  a measuring instrument that determines quantities of heat
     subtype:  bomb_calorimeter__bomb  strong sealed vessel for measuring heat of combustion
  subtype:  chronoscope  an instrument for accurate measurements of small intervals of time
     subtype:  time-delay_measuring_instrument__time-delay_measuring_system  chronoscope for measuring the time difference between two events
  subtype:  colorimeter__tintometer  a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents
  subtype:  counter_tube__countertube  a measuring instrument for counting individual ionizing events
     subtype:  crystal_counter__crystalcounter  a counter tube in which an ionizing event increases conductivity
     subtype:  Geiger_counter__Geiger-Muller_counter  counter tube that detects ionizing radiations
     subtype:  proportional_counter_tube__proportional_counter  counter tube whose output pulse is proportional to number of ions produced
        subtype:  boron_counter_tube__boroncountertube  a proportional counter tube for counting neutrons
     subtype:  scintillation_counter__scintillationcounter  counter tube in which light flashes when exposed to ionizing radiation
  subtype:  craniometer  an instrument for measuring skull sizes
  subtype:  cryoscope  a measuring instrument for measuring freezing and melting points
  subtype:  transit_declinometer__transitdeclinometer__declinometer  an instrument for measuring magnetic declination
  subtype:  densimeter__densitometer  a measuring instrument for determining density or specific gravity
     subtype:  dasymeter  densimeter consisting of a thin glass globe that is weighed in a gas to determine its density
  subtype:  densitometer  a measuring instrument for determining optical or photographic density
     subtype:  microphotometer  special kind of densitometer that measures density variations over a very small area
  subtype:  dosemeter__dosimeter  a measuring instrument for measuring doses of ionizing radiation (X-rays or radioactivity)
  subtype:  dynamometer  measuring instrument designed to measure power
  subtype:  electrodynamometer  measuring instrument that uses the interaction of the magnetic fields of two coils to measure current or voltage or power
  subtype:  electroscope  measuring instrument that detects electric charge; two gold leaves diverge owing to repulsion of charges with like sign
  subtype:  eudiometer  measuring instrument consisting of a graduated glass tube for measuring volume changes in chemical reactions between gases
  subtype:  gauge__gage  a measuring instrument for measuring and indicating a quantity or for testing conformity with a standard
     subtype:  anemometer__wind_gauge  a gauge for recording the speed and direction of wind
     subtype:  depth_gauge__depthgauge  a gauge for measuring the depth of grooves or holes or other concavities
     subtype:  dipstick  a graduated rod dipped into a container to indicate the fluid level
     subtype:  gasoline_gauge__gas_gauge__gasgauge  gauge that indicates the amount of gasoline left in the gasoline tank of a vehicle
     subtype:  pressure_gauge  gauge for measuring and indicating fluid pressure
        subtype:  manometer  a pressure gauge for comparing pressures of a gas
           subtype:  tensimeter  a manometer for measuring vapor pressure
        subtype:  sphygmomanometer  a pressure gauge for measuring blood pressure
     subtype:  rain_gauge  gauge consisting of an instrument to measure the quantity of precipitation
     subtype:  strain_gauge  an gauge for measuring strain in a surface
     subtype:  surface_gauge__surfacegauge__scribing_block  gauge consisting of a scriber mounted on an adjustable stand; used to test the accuracy of plane surfaces
     subtype:  vacuum_gauge  a gauge for indicating negative atmospheric pressure
     subtype:  water_gauge__watergauge__water_gage__watergage__waterglas  gauge for indicating the level of water in e.g. a tank or boiler or reservoir
        subtype:  water_level.water_gauge  a water gauge that shows the level by showing the surface of the water in a trough or U-shaped tube
     subtype:  wire_gauge  gauge for measuring the diameter of wire
  subtype:  graduate  a measuring instrument for measuring fluid volume; a glass container (cup or cylinder or flask) whose sides are marked with or divided into amounts
     subtype:  graduated_cylinder__graduatedcylinder  a cylindrical graduate
  subtype:  gravimeter__gravity_meter__gravitymeter  a measuring instrument for measuring variations in the gravitational field of the earth
  subtype:  hematocrit__haematocrit  a measuring instrument to determine (usually by centrifugation) the relative amounts of corpuscles and plasma in the blood
  subtype:  hydrometer__gravimeter  a measuring instrument for determining the specific gravity of a liquid or solid
     subtype:  salinometer  a hydrometer that determines the concentration of salt solutions by measuring their density
     subtype:  thermohydrometer__thermogravimeter  a hydrometer that includes a thermometer
  subtype:  hygrometer  measuring instrument for measuring the relative humidity of the atmosphere
     subtype:  hygrodeik  a wet and dry bulb hygrometer
     subtype:  hygroscope  hygrometer that shows variations in the relative humidity of the atmosphere
     subtype:  psychrometer  a hygrometer consisting of a dry-bulb thermometer and a wet-bulb thermometer; their difference indicates the dryness of the surrounding air
  subtype:  dip_circle__dipcircle__inclinometer  a measuring instrument for measuring the angle of magnetic dip (as from an airplane)
  subtype:  integrator__planimeter  a measuring instrument for measuring the area of an irregular plane figure
  subtype:  interferometer  any measuring instrument that uses interference patterns to make accurate measurements of waves
  subtype:  ionization_chamber__ionization_tube  a measuring instrument that measures the amount of ionizing radiation
     subtype:  boron_chamber__boronchamber  an ionization chamber lined with boron or filled with boron trifluoride gas for counting low velocity neutrons
     subtype:  Geiger_tube__Geiger-Muller_tube  an ionization chamber contained in a tube in a Geiger counter
  subtype:  katharometer  measures thermal conductivity
  subtype:  Kundt's_tube  a measuring instrument used to measure the speed of sound
  subtype:  log.measuring_instrument  measuring instrument that consists of a float that trails from a ship by a knotted line in order to measure the ship's speed through the water
     subtype:  harpoon_log__harpoonlog  a cylindrical log with a device that registers distance
     subtype:  patent_log__screw_log__screwlog__taffrail_log  a torpedo-shaped log with rotary fins that measure the ship's speed
  subtype:  measuring_stick__measuringstick__measure__measuring_rod__measuringrod  measuring instrument having a sequence of marks at regular intervals; used as a reference in making measurements
     subtype:  board_rule__boardrule  a measure used in computing board feet
     subtype:  ruler__rule  measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths
        subtype:  carpenter's_rule__carpenter'srule  a rule used by a carpenter
        subtype:  foot_rule  a ruler one foot long
        subtype:  meterstick__metrestick  a rule one meter long (usually marked off in centimeters and millimeters)
        subtype:  yard_measure__yardstick  a ruler or tape that is three feet long
     subtype:  size_stick  a mechanical measuring stick used by shoe fitters to measure the length and width of your foot
  subtype:  meter.measuring_instrument  any of various measuring instruments for measuring a quantity
     subtype:  ammeter  a meter that measures the flow of electrical current in amperes
        subtype:  milliammeter  a sensitive ammeter graduated in milliamperes
     subtype:  electrometer  meter to measure electrostatic voltage differences; draws no current from the source
     subtype:  fluxmeter  meter that measures magnetic flux by the current it generates in a coil
     subtype:  galvanometer  meter for detecting or comparing or measuring small electric currents
        subtype:  astatic_galvanometer__astaticgalvanometer  has a moving magnet and astatic coils arranged to cancel the effect of the Earth's magnetic field
        subtype:  moving-coil_galvanometer  a galvanometer that is operated by the force exerted by an electric current flowing in a movable coil suspended in a magnetic field
           subtype:  ballistic_galvanometer__ballisticgalvanometer  a moving-coil galvanometer that measures electric charge
     subtype:  gas_meter__gasmeter__gasometer  a meter for measuring the amount of gas flowing through a particular pipe
     subtype:  magnetometer__gaussmeter  an meter to compare strengths of magnetic fields
     subtype:  odometer__hodometer__mileometer__milometer  a meter that shows mileage traversed
     subtype:  ohmmeter  a meter for measuring electrical resistance in ohms
     subtype:  postage_meter__postagemeter  meter for bulk mailings that imprints correct prepaid postage on pieces of mail and records the total charge
     subtype:  radiometer  meter to detect and measure radiant energy (electromagnetic or acoustic)
        subtype:  Crookes_radiometer  electromagnetic radiometer consisting of a small paddlewheel that rotates when placed in daylight
        subtype:  radiomicrometer  radiometer that is extremely sensitive
        subtype:  Rayleigh_disk  an acoustic radiometer consisting of a light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity
     subtype:  reflectometer  a meter that measures the reflectance of a surface
     subtype:  speedometer__speed_indicator__speedindicator  a meter fixed to a vehicle that measures and displays its speed
        subtype:  machmeter  speedometer for measuring the speed of an aircraft relative to the speed of sound
     subtype:  taximeter  a meter in a taxi that registers the fare (based on the length of the ride)
     subtype:  voltmeter  meter that measures the potential difference between two points
        subtype:  electronic_voltmeter  a voltmeter whose sensitivity is increased by amplification
           subtype:  digital_voltmeter__digitalvoltmeter  an electronic voltmeter that gives readings in digits
        subtype:  millivoltmeter  sensitive voltmeter that can measure voltage in millivolts
     subtype:  water_meter__watermeter  meter for measuring the quantity of water passing through a particular outlet
  subtype:  nephoscope  a grid-like measuring instrument for measuring the altitude, direction, and velocity of movement of clouds
  subtype:  octant  a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration
  subtype:  oximeter  a measuring instrument that measures the oxygen in arterial blood
  subtype:  pedometer  measuring instrument for recording the number of steps taken in walking
  subtype:  pelvimeter  measuring instrument for performing pelvimetry
  subtype:  photometer  measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
     subtype:  spectrophotometer  a photometer for comparing two light radiations wavelength by wavelength
  subtype:  piezometer  a measuring instrument for measuring high pressures
  subtype:  pipet__pipette  measuring instrument consisting of a graduated glass tube used to measure or transfer precise volumes of a liquid by drawing the liquid up into the tube
     subtype:  eye_dropper__eyedropper__dropper  pipet consisting of a small tube with a vacuum bulb at one end for drawing liquid in and releasing it a drop at a time
  subtype:  Pitot-static_tube__Pitot_tube  measuring instrument consisting of a combined Pitot tube and static tube that measures total and static pressure; used in aircraft to measure airspeed
  subtype:  Pitot_tube  measuring instrument used to measure the velocity of fluid flow
  subtype:  plethysmograph  a measuring instrument for measuring changes in volume of a part or organ or whole body (usually resulting from fluctuations in the amount of blood it contains)
     subtype:  body_plethysmograph  plethysmograph consisting of a chamber surrounding the entire body; used in studies of respiration
     subtype:  digital_plethysmograph__digitalplethysmograph  plethysmograph applied to a digit of the hand or foot to measure skin blood flow
  subtype:  potentiometer  a measuring instrument for measuring direct current electromotive forces
  subtype:  quadrant  a measuring instrument for measuring altitude of heavenly bodies
  subtype:  microwave_radar__microwaveradar__radar__radio_detection_and_ranging__radiodetectionandranging__radiolocation  measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects
     subtype:  early_warning_radar__earlywarningradar  a radar that is part of an early warning system
     subtype:  three-dimensional_radar__threedimensionalradar__3d_radar  radar that will report altitude as well as azimuth and distance of a target
     subtype:  weather_radar__weatherradar  radar that is able to detect clouds and precipitation
  subtype:  rangefinder__range_finder__rangefinder  a measuring instrument (acoustic or optical or electronic) for finding the distance of an object
  subtype:  refractometer  measuring instrument for measuring the refractive index of a substance
  subtype:  weighing_machine__scale  a measuring instrument for weighing; shows amount of mass
     subtype:  balance.weighing_machine  a scale for weighing; depends on pull of gravity
        subtype:  beam_balance  a balance consisting of a lever with two equal arms and a pan suspended from each arm
           subtype:  analytical_balance__chemical_balance  a beam balance of great precision used in quantitative chemical analysis
        subtype:  electronic_balance  balance that generates a current proportional to displacement of pan
        subtype:  microbalance  balance for weighing very small objects
        subtype:  spring_balance__spring_scale  a balance that measure weight by the tension on a helical spring
        subtype:  steelyard__lever_scale__leverscale__beam_scale  a portable balance consisting of a pivoted bar with arms of unequal length
     subtype:  weighbridge  platform scale flush with a roadway for weighing vehicles and cattle etc
  subtype:  sclerometer  a measuring instrument that measures the hardness of materials by penetrating them with a stylus that has a diamond point
  subtype:  sector.measuring_instrument  measuring instrument consisting of two graduated arms hinged at one end
  subtype:  seismograph  a measuring instrument for detecting and measuring the intensity and direction and duration of of movements of the ground (as an earthquake)
  subtype:  sensitometer  a measuring instrument for measuring the light sensitivity of film over a range of exposures
  subtype:  sextant  a measuring instrument for measuring the angular distance between celestial objects; resembles an octant
  subtype:  sonar__echo_sounder__asdic  a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return (sonar is SOund NAvigation Ranging; asdic is Anti-Submarine Detection Investigation Committee)
  subtype:  spark_chamber__sparkchamber__spark_counter__sparkcounter  measuring instrument that detects ionizing radiation from elementary particles
  subtype:  spherometer  a measuring instrument for measuring the curvature of a surface
  subtype:  spirograph  a measuring instrument for recording the depth and rapidity of breathing movements
  subtype:  spirometer  a measuring instrument for measuring the vital capacity of the lungs
  subtype:  static_tube  a measuring instrument used to measure static pressure in a stream of fluid
  subtype:  synchroscope__synchronoscoppe__synchronizer  an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot to synchronize the propellers of a plane that has two or more engines)
  subtype:  tachometer__tach  measuring instrument for indicating speed of rotation
     subtype:  tachograph  a tachometer that produces a graphical record of its readings; used to record the speed and duration of trips in a motor vehicle
  subtype:  tape_measure__tape__tapeline  measuring instrument consisting of a narrow strip (cloth or metal) marked in inches or centimeters and used for measuring lengths; "the carpenter should have used his tape measure"
  subtype:  tensiometer  a measuring instrument for measuring the surface tension of a liquid
  subtype:  wire_tensiometer__tensiometer  a measuring instrument for measuring the tension in a wire or fiber or beam
  subtype:  moisture_tensiometer__tensiometer  a measuring instrument for measuring the moisture content of soil
  subtype:  thermometer  measuring instrument for measuring temperature
     subtype:  alcohol_thermometer__alcoholthermometer__alcohol-in-glass_thermometer  thermometer consisting of a glass capillary tube marked with degrees Celsius or Fahrenheit and containing alcohol which rises or falls as it expands or contracts with changes in temperature
     subtype:  candy_thermometer__candythermometer  a thermometer used to determine the temperature of candy syrups during cooking
     subtype:  Centigrade_thermometer  a thermometer calibrated in degrees centigrade
     subtype:  cryometer  a thermometer designed to measure low temperatures
     subtype:  dry-bulb_thermometer  an ordinary thermometer with a dry bulb; used to measure the air temperature
     subtype:  Fahrenheit_thermometer  a thermometer calibrated in degrees Fahrenheit
     subtype:  gas_thermometer__air_thermometer__airthermometer  thermometer that measures temperature by changes in the pressure of a gas kept at constant volume
     subtype:  maximum_and_minimum_thermometer  thermometer that records the highest and lowest temperatures reached during a period of time
     subtype:  meat_thermometer  a thermometer that is inserted into the center of a roast (with the top away from the heat source); used to measure how well done the meat is
     subtype:  mercury_thermometer__mercurythermometer__mercury-in-glass_thermometer  thermometer consisting of mercury contained in a bulb at the bottom of a graduated sealed glass capillary tube marked in degrees Celsius or Fahrenheit; mercury expands with a rise in temperature causing a thin thread of mercury to rise in the tube
        subtype:  Beckman_thermometer  a mercury thermometer that measures small differences or changes in temperature
        subtype:  mercury-in-glass_clinical_thermometer__clinical_thermometer  a mercury thermometer designed to measure the temperature of the human body; graduated to cover a range a few degrees on either side of the normal body temperature
     subtype:  oven_thermometer  a thermometer that registers the temperature inside an oven
     subtype:  pyrometer  a thermometer designed to measure high temperatures
        subtype:  optical_pyrometer__opticalpyrometer__pyroscope  a pyrometer that uses the color of the light emitted by a hot object
        subtype:  pyrometric_cone  a pyrometer consisting of a series of cones that melt at different temperatures
        subtype:  radiation_pyrometer__radiationpyrometer  a pyrometer for estimating the temperature of distant sources of heat; radiation is focussed on a thermojunction connected in circuit with a galvanometer
        subtype:  resistance_pyrometer  pyrometer that measures high temperatures by the resistance in a heated wire
     subtype:  Reaumur_thermometer  an alcohol thermometer calibrated in degrees Reaumur
     subtype:  resistance_thermometer__platinum_thermometer  thermometer that measures temperature by changes in the resistance of a spiral of platinum wire
     subtype:  reversing_thermometer__reversingthermometer  a thermometer that registers the temperature in deep waters
     subtype:  self-registering_thermometer  a thermometer that records the temperature automatically
     subtype:  telethermometer  a thermometer that registers the temperature at some distant point
     subtype:  thermocouple_junction__thermocouple  a kind of thermometer consisting of two wires of different metals that are joined at both ends; one junction is at the temperature to be measured and the other is held at a fixed lower temperature; the current generated in the circuit is proportional to the temperature difference
     subtype:  thermoelectric_thermometer__thermel__electricthermometer  a thermometer that uses thermoelectric current to measure temperature
     subtype:  thermometrograph__thermograph  a thermometer that records temperature variations on a graph as a function of time
     subtype:  thermopile  a kind of thermometer for measuring heat radiation; consists of several thermocouple junctions in series
     subtype:  wet-bulb_thermometer  a thermometer with a bulb that is covered with moist muslin; used in a psychrometer to measure humidity
  subtype:  timepiece__timekeeper  a measuring instrument or device for keeping time
     subtype:  atomic_clock  a timepiece that derives its time scale from the vibration of atoms or molecules
        subtype:  ammonia_clock__ammoniaclock  an atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule
        subtype:  caesium_clock__caesiumclock  an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field
     subtype:  clock  a timepiece that shows the time of day
        subtype:  alarm_clock__alarmclock__alarm  a clock that wakes sleeper at preset time
        subtype:  Big_Ben  clock in the clock tower of the Houses of Parliament, London
        subtype:  chronometer  an accurate clock (especially used in navigation)
        subtype:  cuckoo_clock  clock that announces the hours with a sound like the call of the cuckoo
        subtype:  electric_clock  a clock using a small electric motor
        subtype:  pendulum_clock  a clock regulated by a pendulum
           subtype:  grandfather_clock__grandfatherclock__longcase_clock  a pendulum clock enclosed in a tall narrow case
        subtype:  system_clock.clock__systemclock  a time-of-day clock in a computer system
        subtype:  time_clock  clock used to record the hours that people work
        subtype:  turret_clock  a clock with more than one dial to show the time in all directions from a tower
        subtype:  wall_clock  a clock mounted on a wall
        subtype:  water_clock__waterclock__clepsydra__water_glass__waterglas  clock that measures time by the escape of water
     subtype:  sandglass__sandglas  timepiece in which the passage of time is indicated by the flow of sand from one transparent container to another through a narrow passage
        subtype:  egg_timer__eggtimer  a sandglass that runs for three minutes; used to time the boiling of eggs
        subtype:  hourglass__hourglas  a sandglass that runs for sixty minutes
     subtype:  sundial  timepiece that indicates the daylight hours by the shadow that the gnomon casts on a calibrated dial
     subtype:  timer  a timepiece that measures a time interval and signals its end
        subtype:  chronograph  an accurate timer for recording time
        subtype:  parking_meter__parkingmeter  a coin-operated timer located next to a parking space; depositing money into it entitles you to park your car there for a specified length of time
        subtype:  stopwatch__stopo_watch__stopowatch  a timepiece that can be started or stopped for exact timing (as of a race)
     subtype:  ticker__watch  a small portable timepiece
        subtype:  analog_watch  a watch that represents time by the position of hands on a dial
        subtype:  digital_watch__digitalwatch  a watch with a digital display
        subtype:  hunting_watch__huntingwatch__hunter  a watch with a hinged metal lid to protect the crystal
        subtype:  pendulum_watch  (18th century) a watch with a balance wheel having a fake pendulum attached to it
        subtype:  pocket_watch  a watch that is carried in a small watch pocket
        subtype:  stem-winder  a watch that is wound by turning a knob at the stem
        subtype:  wristwatch__wrist_watch__wristwatch  a watch that is worn strapped to the wrist
  subtype:  tonometer  measuring instrument for measuring tension or pressure (especially for measuring intraocular pressure in testing for glaucoma)
  subtype:  torsion_balance__torsionbalance  measuring instrument designed to measure small forces by the torsion they exert on a thin wire
  subtype:  variometer  a measuring instrument for measuring variations in a magnetic field
  subtype:  Venturi_tube  a measuring instrument used to measure the rate of flow of a liquid
  subtype:  viscometer__viscosimeter  a measuring instrument for measuring viscosity

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