Friday, February 1, 2013


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 as the one that is used to determine longitude at sea.

Clinical Thermometer : A thermometer for measuring the temperature of human body.

Colorimeter : An instrument for comparing intensities of colour.

Commutato:  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 calculations based on the information already fed.

Crescograph : For recording the growth of plants

Cyclotron : Studying the properties of atoms by smashing them

Drinkers Apparatus : To help breathing in infantile paralysis

: 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 : A instrumen fo 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

Sextant  Fo guidin ship o surveying land. 

Spectroscope: An instrument used for spectrum analysis 

Speedometer  :  It  registers  the  speed  at  which  the vehicle is moving

Spherometer  :  For measuring curvature of surfaces

Sphygmomanometer : An instrument used to detect blood pressure in a human body.   It is   also called B.P.Apparatus

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

: Zero Energy Thermometer Assembly for developing thermonuclear Assembly.

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