SCIENTIFIC INSTRUMENTS AND THEIER USE

Actinometer	……………………….	To measure the intensity of radiation
Altimeter	……………………….	A special type of aneroid barometer user to measure altitude
Ammeter	……………………….	To measure strength of electric current
Barometer	……………………….	To measure atmospheric pressure
Biometer	……………………….	An instrument which is used to measure carbon dioxide produced by living bodies.
Bolometer	……………………….	An instruments used to measure the energy of incident electromagnetic radiation falling on a surface.
Calorimeter	……………………….	To measure amount of heat
Carburetor	……………………….	an instrument which charges vapor petrol and air inside a petrol engine.
Commutator	……………………….	To change or reverse the direction of an electric current
Crescograph	……………………….	Used to measure the growth of plants
Epidiascope	……………………….	an optical instrument which is used to project the image of opaque objects.
Eudiometer	……………………….	An instrument which measures the change in volume of gas after a chemical or physical change.
Evaporimeter	……………………….	An instrument used to measure the rate of evaporation from a wet surface
Fathometer	……………………….	Used to measure depth of sea in any place.
Galvanometer	……………………….	To measure electric current
Geiger counter	……………………….	A particle detector which also measures radiation level.
Hydrometer	……………………….	To measure relative density of liquid
Hygrometer	……………………….	To measure relative humidity of atmosphere
Inclinometer	……………………….	Used to measure the inclination of a surface relative to the gravity.
Infrared thermometer	……………………….	To measure temperature of objects from a distance using the infrared wave emitted by the object due to thermal activities.
Manometer	……………………….	To Measure pressure of gas
Micrometer	……………………….	Device which is used to measure small distance and angle with high precision.
Odometer	……………………….	An instrument which is used to measure the distance traveled, It is used in vehicles.
Periscope	……………………….	To observe object on the surface from the submarine
Phonograph	……………………….	an instrument to record sound and reproduce it.
Potentiometer	……………………….	To measure the electrical state between two objects , It is also used as variable resistance.
Pyranometer	……………………….	To measure short wave radiation which is very energetic.
Pyrometer	……………………….	To measure high temperature
Rotameter	……………………….	Instrument which is used to measure the rate of flow of fluids or liquid and gas inside a closed tube.
Seismograph	……………………….	Device which is used to measure the power of an earthquake.
Sextant	……………………….	To measure angular distance between two object
Spectrometer	……………………….	An instrument which is used to split a spectrum of light into it’s constituent spectrum and study it.
Stereoscope	……………………….	An optical device to see two dimensional pictures
Tachometer	……………………….	Used to count the rotating speed of a rotating body like engine , electric motor etc.
Telescope	……………………….	An instrument for viewing distant object is magnified.
Tensiometer	……………………….	An instrument which is used to measure the surface tension of liquids.
Theodolite	……………………….	An instrument which is used to measure angles in horizontal planes and vertical planes which is mainly used for surveying.
Thermocouple	……………………….	A scientific instrument which works on the principle of thermoelectricity and is used to detect or measure heat.
Thermostat	……………………….	An automotive device for regulating constant temperature
Transistor	……………………….	A small device which may be used amplify current.
Voltmeter	……………………….	An instrument to measure potential difference between two points