GK Question of Important Instrument and Uses
1. Accumulator: Device used to store energy
2. Alcoholmeter: Used in measuring the density of alcohol and police
officers use the same for checking alcohol levels in drivers during road safety
checkups
3. Altimeter: Common instrument used in measuring altitude and
the use of the same is seen in aircrafts
4. Ammeter: Measures electric current
5. Anemometer: Measures force and velocity of wind but it is also
helpful in determining the direction of wind
6. Audiometer: For evaluating the hearing ability of a person
7. Barograph: For continuous recording of atmospheric pressure
8. Barometer: To measure atmospheric pressure
9. Binocular: To view distant objects
10. Biometer: To measure carbon dioxide produced by living bodies
11. Bolometer: To measure infrared or heat radiation
12. Calipers: To measure internal and external diameter of
objects
13. Calorimeter: To measure exactly how much heat is released or
absorbed
14. Campbell
Stokes Recorder: Records the hours of bright sunshine
15. Carburettor: For mixing up fuel and air in an internal
combustion engine
16. Cardiograph: Used in tracing the movements of heart and heart
beat
17. Cathetometer: For the accurate measurement of small differences
of height; esp. of the differences in the height of the upper surfaces of two
columns of mercury or other fluid
18. Chronometer: This is a type of clock which determines the time
and longitude of a vessel at sea surface
19. Cinematograph: Its a motion picture film camera, which also serves
as a film projector and developer
20. Crane: The most used machine for moving heavy objects and
construction purposes
21. Crescograph: For determining the growth rate of plants
22. Cyclotron: A charged particle accelerator which can accelerate
charged particles to high energies
23. Durometer: To measure the hardness of a material
24. Dynamo: Used in converting mechanical energy into
electrical energy
25. Dynamometer: Measures electrical power
26. Electrodynamometer: Instrument for measuring current, voltage or power
in both AC & DC circuits
27. Electroencephalograph
(EEC): Records and interprets the electrical
waves of the brain recorded on electroencephalograms
28. Electrometer: Measures very small potential difference in
electric current
29. Electroscope: Detects presence and magnitude of electric charge
on a body
30. Electrostatic
analyzer: Used in ion optics that employs an
electric field to allow the passage of only those ions or electrons that have a
given specific energy
31. Encephalogram: To record the electrical activity of neurons inside
the brain
32. Endoscope: For examining internal organs of the body
33. Epidiascope: Used to project the image of opaque objects
34. Eudiometer: Measures the change in volume of gas mixture after
a chemical or physical change
35. Evaporimeter: Also called Atmometer, its used to measure the rate
of evaporation from a wet surface
36. Fathometer: To measure depth of sea in any place
37. Fluxmeter: For measuring magnetic flux
38. Galvanometer: For detecting and measuring electric currents
39. Geiger
counter: Its a particle detector which also
measures radiation levels
40. Gravimeter: For measuring variations in the Earth's
gravitational field
41. Hail
Pad: To estimate the strength of the impact
of hailstones
42. Hydraulic
intensifier: Its a hydraulic machine for
transforming hydraulic power at low pressure into a reduced volume at higher
pressure
43. Hydrometer: To measure the relative density of liquids; that
is, the ratio of the density of the liquid to the density of water
44. Hydrophone: Used underwater for recording or listening to
underwater sound
45. Hygrometer: For finding out the level of humidity that is used
in cricket matches, climatic centers etc.
46. Hypsometer: To estimate the height above sea level
47. Inclinometer: To measure the inclination of a surface relative to
the gravity
48. Infrared
thermometer: To measure temperature of objects from
a distance using the infrared wave emitted by the object due to thermal
activities
49. Katharometer: Device for measuring thermal conductivity
50. Kymograph: For recording variations in pressure, as of the
blood, or in tension, as of a muscle, by means of a pen or stylus that marks a
rotating drum
51. Lactometer: To measure the relative density of milk to find its
purity and in dairy farms, milk collecting centers etc.
52. Magnetometer: To measure the strength, and, in some cases,
direction of the magnetic field
53. Manometer: For measuring pressure of gases
54. Mariners
Compass: For determining direction. Used by
mariners, ship crew, etc.
55. Micrometer: This is a gauge which is used for accurate measurement
of small distances
56. Microphone: Used in converting sound waves into electrical
energy which is transmitted to wire to the desired location
57. Microscope: This instrument is used in the determination of
small objects and their magnified view is made possible by the same
58. Nephelometer: Measures the scattering of light by particles
suspended in a liquid
59. Net
radiometer: Net radiometer is an instrument which
is used to measure the net radiation
60. Neutron
probe: Neutron probe is used to measure the
amount of water or wetness presence in soil. It is used mainly in agriculture
science
61. Odometer: This is same as a speed tracer as it is used in
finding out the distance travelled by wheeled vehicles
62. Ohmmeter: Measures electrical resistance
63. Oscillograph: Oscillograph is an instrument which is used to
measure and record a varying electric current also called alternating current
64. Periscope: The instrument is commonly in hands of sub –
mariners and it is used for vision of objects above the sea level from the down
part of sea
65. pH
meter: pH meter is an instrument which is used
to measure the pH or acidity and alkalinity of a liquid
66. Phonometer: This is useful in finding out the intensity of
sound
67. Photometer: This is used in comparison of luminous intensity of
the sources of light
68. Planimeter: Used to determine the area of an arbitrary
two-dimensional shape
69. Polygraph: Instrument that simultaneously records change in
physiological processes such as heartbeat, blood pressure and respiration-used
as a lie detecter
70. Potentiometer: Potentiometer is used to measure the electrical
state between two objects. It is also used as variable resistance
71. Pyknometer: To measure the density and co-efficient of
expansion of liquid
72. Pyranometer: Used to measure short wave radiation which is very
energetic
73. Pyrheliometer: To measure solar radiations
74. Pyrometer: Measure very high temperature
75. Quadrant: To measure altitudes and angles in navigation and
astronomy
76. Radar: Radar is an instrument to detect the presence and
shape of objects in it’s range using microwave
77. Radiator: Radiator is an instruments which dissipates heat
from engines
78. Radio
micrometer (Radiometer): To measure heat
radiations
79. Rain
Gauge: A rain gauge measures the amount of
rainfall. The standard rain gauge consists of a long, narrow cylinder capable
of measuring rainfall up to 8 inches
80. Refractometer: To measure the refractive index of a substance
81. Resistance
Thermometer: An accurate type of thermometer in
which temperature is measured by determining the electrical resistance of a
coil of thin wire
82. Rotameter: Used to measure the rate of flow of fluids or
liquid and gas inside a closed tube
83. Saccharimeter: To measure the amount of sugar needed and the
amount of sugar dissolved in a solution
84. Salinometer: To determine the concentration of salt solutions by
measuring their densities. It is a type of hydrometer
85. Seismometer: This is used in recording the intensity and origin
of earthquakes and also useful in richer scale
86. Sextant: Used to measure the angular distance between two
objects
87. Solar
cell: Cell that converts solar energy into
electrical energy
88. Spectrometer: Measures the spectral line and is useful in
spectrometry and is used in many purposes like identification of elements
89. Spectroscope: To analyse spectrum of light
90. Speedometer: Measures the speed of motor vehicles and also to
find the speed limit of driving
91. sphygmometer: Used for checking the blood pressure
92. Spring
balance: To measure the mass of a body and is
preferred only when quick but approximate determinations are to be carried out
93. Stereoscope: To see two dimensional pictures as having depth and
solidity
94. Stethoscope: The instrument used by Doctors to find out the
heart and lung sounds but helpful in their analysis too
95. Stopwatch: To measure small duration of time in sports events
etc.
96. Stroboscope: Used to make a cyclically moving object appear to
be slow-moving, or stationary
97. Tacheometer/Tachymeter: Used to measure distances, elevations and bearings
during survey
98. Tachometer: To determine speed, especially the rotational speed
of a shaft (Used in aeroplanes and motor-boats)
99. Tangent
galvanometer: To measure the strength of direct
current
100. Telemeter: Records physical happenings at a distant place
101. Teleprinter: Used to send and receive typed messages from point
to point and point to multipoint over various types of communications channels
102. Telescope: Used in astronomical studies and helps in viewing
distant objects and can be also magnified
103. Tensiometer: Used to measure the surface tension of liquids
104. Theodolite: Measures horizontal and vertical angles
105. Thermometer: Used in measurement of temperature
106. Thermostat: Senses the temperature of a system so that the
system's temperature is maintained near a desired setpoint
107. Tonometer: Measures the pitch of sound
108. Transponder: Used to receive a signal and transmit an reply
immediately
109. Udometer: Used by meteorologists and hydrologists to gather
and measure the amount of liquid precipitation over a set period of time
110. Urinometer: Used for determining urine specific gravity
111. Venturimeter: Measures rate of flow of liquids
112. Viscometer: Used to measure the viscosity of a fluid
113. Voltmeter: Used for measuring electrical potential difference
between two points in an electric circuit
114. Wattmeter: Measures the power of an electric circuit
115. Wind
vane: Used to find the direction of wind