| Instruments |
Uses |
| Altimeter |
Measurement of altitude. Mainly used in aircraft. |
| Ammeter |
To measure strength of electric current. |
| Anemometer |
Used for measurement of force and velocity of wind and directions. |
| Audiometer |
It measures intensity of sound |
| Barograph |
It is used for continuous recording of atmospheric pressure. |
| Barometer |
It measures atmospheric pressure. |
| Bolometer |
It is used to measure heat radiation. |
| Callipers |
It is used to measure inner and outer diameter of bodies. |
| Calorimeter |
It is used to measure quantities of heat. |
| Cardiogram (ECG) |
It is used to trace movements of the heart. |
| Cathetometer |
Used to determine heights, measurement of levels, etc. in scientific experiments. |
| Chronometer |
Used to determine longitude of a vessel at sea. |
| Colorimeter |
It compares intensity of colours. |
| Commutator |
Used to change the direction of electric current. It is also used to convert AC into DC. |
| Cryometer |
A type of thermometer used to measure very low temperatures usually close to Zero degree Centigrade. |
| Cyclotron |
A charged particle acelerator which can accelerate charged particles to high energies. |
| Dilatometer |
It measures changes in volume of substances. |
| Dyanamo |
It converts mechanical energy into electrical energy. |
| Dynamometer |
It is used to measure electrical power. |
| EEC |
It measures and records electrical activity of brain. |
| Electrometer |
It is used to measure very small but potential difference in electric currents. |
| Electromicroscope |
It is used to obtain a magnifying view of very small objects capable of magnifying up to 20,000 times. |
| Electroscope |
It detects presence of an electric charge. |
| Endoscope |
It is used to examine internal parts of the body. |
| Fathometer |
It is used to measure depth of the ocean. |
| Fluxmeter |
It measures magnetic flux. |
| Galvanometer |
It measures electric current. |
| Hydrometer |
It measures the relative density of liquids. |
| Hydrophone |
It is used to measure sound under water. |
| Hygrometer |
It measures level of humidity |
| Hygroscope |
It shows the changes in atmospheric humidity |
| Hypsometer |
It is used to determine boiling point of liquids. |
| Kymograph |
It is a graphically records physiological movement. |
| Lactometer |
It is used to measure the relative density of milk to determine purity. |
| Machmeter |
It is used to determine the speed of an aircraft in terms of the speed of sound. |
| Magnetometer |
It is used to compare magnetic moments of magnets and fields. |
| Manometer |
It measures the pressure of gases |
| Micrometer |
It is used to measure distances/angles. |
| Microphone |
It converts sound waves into electrical vibrations. |
| Microscope |
It is used to obtain magnified view of small objects. |
| Nephetometer |
It measures the scattering of light by particles suspended in a liquid |
| Ohmmeter |
It is used to measure electrical resistance in ohms. |
| Ondometer |
It is used to measure the frequency of electromagnetic waves, especially in the rdio-frequency band. |
| Periscope |
It is used in Submarines to view objects above sea level. |
| Photometer |
It is used to compare the luminous intensity of the source of light. |
| Polygraph |
This instrument simultaneously records changes in physiological processes such as heartbeat, blood-pressure and respiration. It is used as a lie detector. |
| Pyknometer |
It is used to determine the density and co-efficient of expansion of liquids. |
| Pyrheliometer |
It measures components of solar radiation. |
| Pyrometer |
It is used to measure very high temperature. |
| Quadrant |
It is used to measure altitudes and angles in navigation and astronomy. |
| Radar |
It is used to detect the direction and range of an approaching aeroplane by means of radiowaves |
| Radio micrometer |
It is used to measure heat radiation. |
| Refractometer |
It is used to measure refractive indices. |
| Salinometer |
It is used to determine salinity of solutions. |
| Spectrometer |
It is used to measure the position of spectral lines. |
| Spectroscope |
It is used to observe or record spectra. |
| Spherometer |
It measures curvature of spherical objects. |
| Sphygmometer |
It measure blood pressure. |
| Stereoscope |
It is used to view two-dimensional picture. |
| Stethoscope |
It is used by Doctors to hear and analyze heart and lung sounds. |
| Stroboscope |
It is used to view rapidly moving objects |
| Tacheometer |
A theodolite adapted to measure distances, elevations and bearings during survey |
| Tachometer |
It is used to determine speed, especially the rotational speed of a shaft (used in aeroplanes and motor-boats.) |
| Tangent Galvenometer |
It is used to measure the strength of direct current. |
| Telemeter |
It is used to record physical happenings at a distant place. |
| Teleprinter |
It receives and sends typed messages from one place to another. |
| Telescope |
It is used to view distant objects in space. |
| Thermometer |
It is used to measure temperature |
| Thermostat |
It regulates temperature at a particular point |
| Tonometer |
It is used to measure the pitch of a sound |
| Transponder |
It is used to receive a signal and transmit a reply immediately |
| Udometer |
Rain gauge |
| Ultrasonoscope |
It is used to measure and use ultrasonic sound. It is used to make a Ecogram to detect brain tumours, heart defects and abnormal growth. |
| Venturimeter |
It is used to measure the rate of flow of liquids. |
| Vernier |
It is used to measure small sub-division of scale. |
| Viscometer |
It is used to measure the viscosity of liquid |
| Voltmeter |
It is used to measure electric potential difference between two points. |
| Wattmeter |
It is used to measure the power of an electric circuit |
| Wavemeter |
It is used to measure the wavelength of a radiowave. |
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