Scientific instruments and its uses

Aerometer	Instrument for measuring weight and density of air and gases.
Altimeter	Instrument used in aircraft to measure altitude.
Ammeter	Instrument used to measure electrical current flowing in a circuit.
Anemometer	Instrument to measure the force and velocity of wind.
Audiometer	Instrument to measure intensity of sound.
Barometer	Instrument used to measure the atmospheric pressure.
Calorimeter	Instrument used for measuring quantities of heat.
Cardiogram	A medical instrument for tracing heart movements.
Crescograph	Instrument for use in recording growth of plants.
Dynamo	Instrument for transforming mechanical energy into electrical energy.
Fathometer	Instrument used for measuring depth of the ocean.
Geiger Counter	Instrument for recording the amount of radiation emitted by a source of radio-activity.
Hydrometer	Instrument used for measuring the specific gravity of liquids
Hydrophone	Instrument used for recording sound under water
Hygrometer	Instrument for measuring the amount of water vapours (humidity) in the atmosphere.
Kymograph	Instrument used to record graphically various physiological movements i.e.,blood pressure,heart beating, study of lungs etc. in living beings.
Lactometer	Aparatus used for measuring the purity of milk.
Manometer	Apparatus used for determining the pressure of a gas.
Odometer	Instrument by which the distance covered by wheeled vehicles is recorded.
Oscillograph	Instrument for recording electrical or mechanical vibrations.
Photometer	Apparatus used to compare the illuminating power of two sources of light.
Pyrometer	Instrument for recording high temperatures from a great distance.
Radiometer	Instrument for measuring the emission of radiant energy.
Rain gauge	Apparatus for recording of rainfall at a particular piece.
Refractometer	Instrument to measure refractive indices.
Saccharimeter	Instrument for determining the amount of sugar in a solution.
Sextant	An optical instrument used for finding out the altitude of celestial bodies and their angular distances.
Sphygmomanometer	Instrument used for measuring arterial bolld-pressure.
Spherometer	Instrument for measuring curvature of surfaces.
Seismograph	Instrument used for recording earthquake shocks.
Tachometer	Instrument for determining speeds of aeroplanes and motor boats.
Thermostat	Instrument used to regulate the temperature to a particular degree.
Transformer	An electrical apparatus used to convert high voltage to low and vice versa