அறிவியலில் பயன்படுத்தும் கருவிகள் (Instruments used in science)

·         Altimeter–An instrument used for measuring altitudes in aircraft.

·         Ammeter–An instrument for measuring electric currents in amperes.

·         Anemometer–An instrument for measuring the force and velocity of wind.

·         Audiometer–An instrument for measuring the intensity of sound.

·         Audiophone–An instrument for improving imperfect sense of hearing.

·         Barometer–An apparatus used for measuring the atmospheric pressure.

·         Calorimeter–An instrument used for measuring quantities of heat.

·         Carburettor–An apparatus used in an internal combustion engine for charging air with petrol vapour.

·         Cardiograph–A medical instrument for tracing heart movements.

·         Chronometer–An instrument kept on board ships for measuring accurate time.

·         Crescograph–It is used for measuring growth in plants.

·         Dynamo–The origin of electricity in a dynamo is the transformation of mechanical energy into electrical energy.

·         Galvanometer–An instrument for measuring electric currents of small magnitude.

·         Hydrometer–An instrument used for measuring the specific gravity of liquids.

·         Hydrophone–An instrument for recording sound under water.

·         Hygrometer–An instrument for measuring humidity in air.

·         Lactometer–An Instrument for measuring the relative density of milk.

·         Manometer–An instrument for measuring the pressure of a gases.

·         Mariner's compass–An apparatus used by sailors to know the direction. The needle always points north-south.

·         Microphone–An instrument used for converting sound waves into electrical vibrations and to magnify the sound.

·         Microscope–An instrument used for magnifying minute objects by a lens system.

·         Odometer–An instrument by which the distance covered by wheeled vehicles is measured.

·         Phonograph–An instrument for reproducing sound.

·         Photometer–It is an instrument for measuring the intensity of light; a device for comparing the luminous intensity of sources of light.

·         Polarimeter–An instrument used for measuring optical activity.

·         Pyrometer–An instrument for recording high temperatures from a great distance.

·         Radar–It is an abbreviated form of Radio, Angle, Direction and Range. It is used for detecting the direction and range of an approaching plane by means of radio microwaves.

·         Rain Gauge–An apparatus for recording rainfall at a particular place.

·         Radiometer–An instrument for measuring the emission of radiant energy.

·         Refractometer–An instrument to measure refractive indexes.

·         Seismometer or Seismograph–An instrument for recording earthquake shocks.

·         Sextant–An instrument used for measuring the altitude of the sun and other heavenly bodies.

·         Spectrometer–An instrument for measuring the energy distribution of a particular type of radiation.

·         Speedometer–An instrument which indicates the speed at which a vehicle is moving.

·         Spherometer–An instrument for measuring curvature of surfaces.