Scientific instruments
Accumulator : Electrical energy is stored
Altimeter : Used in aircraft for measuring altitudes
Ammeter : Measuring the electrical current in amperes
Anemometer : Measuring the strength of winds
Audiometer : Measuring intensity of wind
Barometer : Measuring atmospheric pressure
Binocular : An optical instrument designed for magnified view of distant objects by both eyes simultaneously
Cardiogram : For recording the heart movements
Calorimeter : Measuring of quantities of heat
Chronometer : A clock that keeps very accurate time
Clinical Thermometer : A thermometer for measuring the temperature of human body.
Colorimeter : An instrument for comparing intensities of colour.
Commutator : An instrument to change or remove the direction of an electric current, in dynamo used to convert alternating current into direct current.
Computer : A technical device designed to find instantaneous solutions of huge complex based on the information already fed. calculations
Crescograph : For recording the growth of plants
Cyclotron : Studying the properties of atoms by smashing them
Drinker’s Apparatus : To help breathing in infantile paralysis
Dynamo : A device for converting mechanical energy into electrical energy
Dynamometer : An instrument for measuring the electrical power.
E.C.G. : Device to diagnose heart disfunctioning
E.E.G. : To diagnose disorder in the human brain
Electroscope : An instrument for detecting the presence of electric charge.
Eudiometer : Measuring volume changes in chemical reaction between gases
Fathometer : Measuring depth of the ocean
Galvanometer : For detecting and measuring electric current
Geiger Muller Counter (GM Counter) : An instrument for detecting and counting atomic particles and radiations
Hydrometer : For determining the specific gravity of liquids
Hygrometer : For measuring the amount of water vapours
Iron Lung : For artificial respiration
Lactometer : For determining the purity of milk
Manometer : To measure gas pressure
Micrometer : For accurately measuring small distance or angles
Microscope : An instrument for magnified view of very small objects.
Odometer : The distance covered by a wheeled vehicle is recorded
Oscillograph : For recording electrical or mechanical vibrations
Periscope : It is used in submarine to survey the ships etc., on the sea while the submarine is under water
Phonograph : For reproducing sound
Photometer : An instrument for comparing the luminous intensity of the sources of light
Plantimeter : A mechanical integrating instrument to measure area of a plane surface.
Pyrometer : For measuring high temperature from a distance
Pyknometer : An instrument used to measure the density and coefficient of expansion of a liquid
Quadrant : An instrument for measuring altitudes and angles in navigation and astronomy
Quartz Clock : A highly accurate clock used in astronomical observations and other precision work
Radar : Radio, Angle, detection and range is used to detect the direction and range of an approaching aeroplane by means of radio micro waves
Radiometer : An instrument for measuring the emission of radiant energy
Radio Micrometer : An instrument for measuring heat radiations
Rain Guage : An instrument for measuring rainfall
Rectifier : An instrument used for the conversion of AC into DC.
Refractometer : An instrument used to measure the refractive index of a substance
Resistance Thermometer : Used for determining the electrical resistance of conductors
Salinometer : A type of hydrometer used to determine the concentration of salt solutions by measuring their densities
Seismometer (Seismograph) : An Apparatus for measuring and recording earthquake shock
Spectroscope : An instrument used for spectrum analysis
Speedometer : It registers the speed at which the vehicle is moving
Spherometer : For measuring curvature of surfaces
Sphygmophone : Instrument with the help of which, a pulse beat makes a sound
Spring Balance : Useful for measuring weight
Stethoscope : To hear and analyse movements of heart and lungs
Stop Watch : Recording small intervals of time in the races
Stroboscope : An instrument used for viewing the objects moving rapidly with a periodic motion and to see them as if they were at rest.
Tachometer : For measuring speed of aeroplanes and motor boats
Tangent Galvanometer : An instrument for measuring the strength of direct current.
Telemeter : For recording physical events happening at a distance
Teleprinter : A machine which records automatically messages received on telephone wires
Telescope : For viewing distant objects
Television (T.V.) : For transmitting the visible moving images by means of wireless waves.
Theodolite : Measuring distances on the surface of the earth
Thermometer : For recording temperature of a human body
Thermocouple : Measuring temperature
Thermostat : Automatically controlling the temperature to a particular degree
Transformer : To convert high voltage to low and vice versa
Transistor : A small device which may be used to amplify currents and perform other functions usually performed by a thermionic valve
Vernier : An adjustable scale for measuring small sub divisions of scale
Viscometer : For measuring viscosity
Voltmeter : To measure potential difference between two points
List I List II
a) Anemometer 1) Speed of rotation
b) Ammeter 2) High temperature
c) Tacho meter 3) Wind speed
d) Pyrometer 4) Electric current
List I List II
a) Radar is used to 1) determine huminity of air
b) Hygrometer is 2) Determine the light intensity
c) Photometer is 3) Determine the purity of milk
d) Lactometer is 4) detect flying object