| Name of Instrument | Use of Instrument |
| Altimeter | Measures altitude (uses in aircraft) |
| Ammeter | Measures strength of electric current |
| Anemometer | Measures force and velocity of wind and determines its direction |
| Audiometer | Measures intensity of sound |
| Barometer | Measures atmospheric pressure |
| Balometer | Measures heat radiation |
| Callipers | Measures inner and outer diameter of solids |
| Calorimeter | Measures quantities of heat |
| Cardiogram (ECG) | Traces movements of the heat, recorded on a cardiograph |
| Chronometer | Determines longitude of a vessel at sea |
| Cryometer | Measures very low temperatures, usally below 0oC |
| Dynamo | Convert Mechanical energy into electric energy |
| Dynamometer | Measures electric power |
| Electroencephalograph (EEC) | Record and interprets the electrical waves of the brain recorded on electroencephalograph |
| Electrometer | Measures very small, potential difference in electric current |
| Electroscope | Detects presence of an electric current |
| Edoscope | Examines internal organs of the body |
| Fathometer | Measures depth of the ocean |
| Fluxmeter | Measures magnetic flux |
| Galvanometer | Measures the eletric current |
| Hydrometer | Measures the relative density of liquids |
| Hygrometer | Measures level of humidity |
| Hydrophone | Measures sound under water |
| Kymograph | Graphically record physiological movements (e.g., blood pressure/heartbeat) |
| Lactometer | Measures the relative density of milk to determine purity (fat content) |
| Manometer | Measures the pressure of gases |
| Microphone | Converts sound waves into electrical signals |
| Microscope | To obtain a magnified of light by particles suspended in a liquid |
| Ohmmeter | Measures electrical resistance in ohms |
| Ondometer | Measures the frequency of electromagnetic waves |
| Periscope | To view objects above sea level (used in submarines) |
| Polygraph | Instrument that simultaneously records changes in physiological processes such as heartbeat, blood pressure and respiration used as a lie detector |
| Pyknometer | Determines the density and coefficient of expansion of liquids |
| Pyrheliometer | Measures components of solar radiation |
| Pyrometer | Measures very high temperature |
| Quadrant | Measures altitude and angles in navigation and astronomy |
| Rader | Detects the direction and range of an approaching aeroplane by means of an radiowaves (Radio, Angle, Detection and Range) |
| Refractometer | Measures refractive indices |
| Resistance Thermometer | An accurate type of thermometer in which temperature is meansured by determining the electrical resistance of a coil of thin wire |
| Salinometer | Determines salinity of solutions |
| Sextant | Used by navigators to find the latitude of a place by measuring the elevation above the horizon of the sun or another star-also measures the height of distant objects |
| Sphygmomanometer | Measures Blood pressure |
| Stereoscope | Used to veiw two - dimensional pictures |
| Stethoscope | Used by doctors to hear and analyze heat and jung sounds |
| Stroboscope | Used to view rapidly moving objects |
| Tachometer | Determines speed, especially the rotational speed of a shaft (used in motor vehicles, aeroplanes and motor-boats) |
| Tacheometer | Used to measure distance, elevations and bearings during survey |
| Telescope | Used to view distant objects in space |
| Theodolite | Measures horizontal and vertical angles |
| Tonometer | Measures the pitch of sound |
| Transponder | Used to receive a signal and transmit a reply immediately |
| Udometer | Rain gauge |
| Venturi meter | Measures rate of flow of liquids |
| Viscometer | Measures the viscosity of liquids |
| Voltmeter | Used to measure potential difference between two points |
| Wattmeter | Measures the power of an electric circuit |
| Wavemeter | Measures the wavelength of a radiowave |
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