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Cinematography: It is an instrument used in cinema making to throw on screen and enlarged image of photograph.
Crescograph: It measures the growth in plants.
Cyclotron: A charged particle accelerator which can accelerate charged particles to high energies.
Dynamo: It converts mechanical energy into electrical energy.
Dynamometer: It measures electric power
Electrometer: It measure electricity
Electroscope: It detects presence of an electric charge.
Endoscope: It examines internal parts of thebody.
Eudiometer: A glass tube for measuring volume changes in chemical reactions between gases.
Fathometer: It measures the depth of the ocean.
Galvanometer: It measures the electric current of low magnitude.
Hydrometer: It measures the specific gravity ofliquids.
Hygrometer: It measures humidity in air.
Hydrophone: It measures sound under water.
Kymograph: It graphically records physiological movements (Blood pressure and heart beat).
Lactometer: It determines the purity of milk.
Manometer: It measures the pressure of gases.
Mariner’s compass: It is an instrument used by the sailors to determine the direction.
Microphone: It converts the sound waves into electrical vibrations and to magnify the sound.
Microscope: It is used to obtain magnified view of small objects.
Odometer: An instrument by which the distance covered by wheeled vehicles is measured.
Phonograph: An instrument for producing sound.
Photometer: The instrument compares the luminous intensity of the source of light
Periscope: It is used to view objects above sea level (used in sub-marines).
Potentiometer: It is used for comparing electromotive force of cells.
Pyrometer: It measures very high temperature.
Radar: 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: It measures the emission of radiant energy.
Refractometer: It measures· refractive index.
Saccharimeter: It measures the amount of sugar in the solution.
Seismograph: It measures the intensity of earthquake shocks.
Salinometer: It determines salinity of solution.
Sextant: This is used by navigators to find the latitude of a place by measuring the elevation above the horizon of the sun or another star.
Spectrometer: It is an instrument for measuring the energy distribution of a particular type of radiation.
Speedometer: It is an instrument placed in a vehicle to record its speed.
Sphygmomanometer: It measures blood pressure.
Spherometer: It measures the curvatures of surfaces.
Stereoscope: It is used to view two dimensional pictures.
Stethoscope: An instrument which is used by the doctors to hear and analyze heart and lung sounds.

Straboscope: It is used to view rapidly moving objects.
Tachometer: An instrument used in measuring speeds of aero planes and motor boats.
Teleprinter: This instrument receives and sends typed messages from one place to another.
Telescope: It views distant objects in space.
Theodolite: It measures horizontal and vertical angles.
Thermometer: This instrument is used for the measurement of temperatures.
Thermostat: It regulates the temperature at a particular point.
Viscometer: It measures the viscosity of liquids.
Voltmeter: It measures the electric potential difference between two points.
Altimeter: It measures altitudes and is used in aircrafts.
Ammeter: It measures strength of electric current (in amperes).
Audiometer: It measures intensity of sound.
Anemometer: It measures force and velocity of wind.
Audiophone It is used for Improving imperfect sense of hearing.
Barograph: It is used for continuous recording of atmospheric pressure.
Barometer: It measures atmospheric pressure.
Binocular: It is used to view distant objects
Bolometer: It measures heat radiation.
Calorimeter: It measures quantity of heat.
Carburetor: It is used in an internal combustion engine for charging air with petrol vapour.
Cardiogram: It traces movements of the heart, recorded on a cardiograph.
Chronometer: It determines longitude of a place kept onboard ship.

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