Dear Aspirants, In this article I provide a complete list of **Measuring instruments** and their uses which we use in our daily life which are very useful for us. Different Instrument has different work properties.

In most of the Competitive examinations like Railway NTPC, JE, ALP, Group D, SSC CGL, CHSL, Banking, FCI, State PSU, etc., science is a major part of General Knowledge. Most questions arise in the examination from **Unit and Measurement, Chemical Formulas, Inventions and Discoveries, Important Minerals & Ores, Various Branches of science/Study of Different fields, etc. **which are helpful for all students and Aspirants for all competitive examinations like Railway NTPC, JE, Group-D, SSC, Banking, and state PSU.

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## List of Measuring Instruments and Their Uses are:-

SI No. |
Instrument/Device |
Used for |

1 |
Accelerometer |
It measures physical acceleration |

2 |
Actino meter |
It measures the heating power of sunlight. or measure the intensity of solar radiation |

3 |
Accumulator |
It Used to restore electrical current. |

4 |
Alcholmeter |
It measures the alcoholic strength of liquids |

5 |
Altimeter |
It measures altitude sand is used in aircrafts |

6 |
Ammeter |
It measures the strength of the electric current. |

7 |
Anemometer |
It measures the speed and velocity of the wind. |

8 |
Apicoiscope |
It used to display the opaque photo on the screen |

9 |
Audimeter |
It measures hearing or least audible sound. |

10 |
Audiometer |
It measures the intensity of sound |

11 |
Audiophone |
It is used for improving the imperfect sense of hearing |

12 |
Aviontimeter |
It is used to detect measure the intensity of sun rays. |

13 |
Avometer |
Detect any fault in the radio. |

14 |
Barkometer |
It measures tanning liquors used in tanning leather |

15 |
Barograph |
It measures continuous recording of atmospheric pressure |

16 |
Barometer |
It measures the atmospheric pressure |

17 |
Bevameter |
It measures the mechanical properties of soil |

18 |
Binocular |
The device used to view distant objects. |

19 |
Bolometer |
It measures thermal radiation |

20 |
Brannok Device |
It measures shoe size |

21 |
Breathalyzer |
It measures breath alcohol content Caliper distance |

22 |
Calorimeter |
It measures the quantity of heat |

23 |
Carburetor |
It is used in an internal combustion engine for charging the air with pet vapour. |

24 |
Cardiogram |
It traces movements of the heart. Recorded on a cardiograph |

25 |
Cathetometer |
It measures vertical distances |

26 |
Callipers |
It measured the internal and external diameter of a cylindrical object |

27 |
Ceilometer |
It measures the height of a cloud base |

28 |
Chronometer |
It determines the navigation and longitude of a place. |

29 |
Chronometer |
It measures the right time in ships/streamers |

30 |
Clapo meter |
It measures the volume of applause |

31 |
Colorimeter |
It measures color |

32 |
Compass |
It is an instrument used by the sailors to determine the direction. |

33 |
Creepmeter |
It measures the slow surface displacement of an active geologic fault in the earth |

34 |
Crescograph |
It measures the growth in plants |

35 |
Cyclotron |
A charged particle accelerator can accelerate charged particles high energies |

36 |
Declinometer |
It measures magnetic declination |

37 |
Densimeter |
It measures the specific gravity of liquids |

38 |
Densitometer |
It measures the degree of darkness in photographic or semitransparent material |

39 |
Dialtometer |
It measures volume changes caused by a physical or chemical process |

40 |
Diffractometer |
It measures the structure of crystals |

41 |
Disdrometer |
It measures the size, speed, and velocity of raindrops |

42 |
Dosimeter |
It measures exposure to hazards, especially radiation; radiation of item |

43 |
Dynamo |
It converts mechanical energy into electrical energy. |

44 |
Dynamometer |
It measures electrical power |

45 |
Electricity Meter |
It measures electrical energy |

46 |
Electrometer |
It measures the potential difference |

47 |
Electronic Tuner |
It measures the pitch of musical notes |

48 |
Electroscope |
The device that confirms/detects the presence of electric charge. |

49 |
Ellipsometer |
It measures refractive index, dielectric function, the thickness of thin films |

50 |
Endoscope |
It examines the internal parts of the body. |

51 |
Eudiometer |
It used for measuring volume changes in the chemical reaction between gases. |

52 |
Eudiometer |
It measures the change in volume of a gas mixture following combustion |

53 |
Evaporimeter |
It measures the rate of evaporation |

54 |
Fathometer |
It measures the depth of the sea and ocean. |

55 |
Frequency Counter |
It measures the Frequency of Alternating Current |

56 |
Fuel Gauge |
It measures fuel levels |

57 |
Galvanometer |
It measures the low magnitude electric current. |

58 |
Gas Pycnometer |
It measures the volume and density of solids |

59 |
Geiger Counter |
It measures ionizing radiation |

60 |
Glucometer |
It measures blood glucose |

61 |
Graphometer |
It measures angles |

62 |
Heliometer |
It measures the variation of the sun’s diameter |

63 |
Hydrometer |
It measures the specific gravity of liquids. |

64 |
Hydrophone |
It measures sound underwater |

65 |
Hygrometer |
It measures humidity in the air |

66 |
Inclinometer |
It measures the angle of a slope |

67 |
Infrared Thermometer |
It measures heat radiated |

68 |
Interferometer |
It measures wave interference |

69 |
Katharometer |
It measures the composition of gases |

70 |
Kymograph |
It graphically records the physical movements of cells. |

71 |
Lactometer |
It determines the purity of milk. |

72 |
Light meter |
It measures light in photography. |

73 |
Lux meter |
It measures the intensity of light. |

74 |
Magnetometer |
It measures the strength of magnetic fields |

75 |
Manometer |
It measures the pressure of gases. |

76 |
Mass Spectrometer |
It measures masses of ions, used to identify chemical substances through their mass spectra |

77 |
Megger |
It measures electrical insulation |

78 |
Megaphone |
It used to throw sound or voice remotely. |

79 |
Mercury Barometer |
It measures Atmospheric pressure |

80 |
Micrometer |
It measures small distances |

81 |
Microphone |
It converts the sound waves into electrical vibrations and magnifies the sound. |

82 |
Microscope |
It is used to obtain a magnified view of a small object. |

83 |
Multimeter |
It measures electrical potential, resistance, and current |

84 |
Nephelometer |
It measures particle in a liquid |

85 |
Nephoscope |
It measures the speed and direction of clouds |

86 |
Odometer |
It measures the distance covered by wheeled vehicles. |

87 |
Ohmmeter |
It measures electrical resistance |

88 |
Orchidometer |
It measures testicle size in male humans |

89 |
Oscilloscope |
It measures oscillations |

90 |
Osmometer |
It determines the concentration of osmotically active particles that reduce the vapor pressure of a solution. |

91 |
Oximetry |
It used to measure the oxygen level (oxygen saturation) of the blood. |

92 |
Parking Meter |
It measures collects money for vehicle parking rights in a zone for a limited time |

93 |
Pedometer |
It measures steps PH meter pH (chemical acidity/basicity of a solution) |

94 |
Periscope |
It is used to view object above sea level (used in submarines) |

95 |
Phonograph |
An instrument for producing sound. |

96 |
Photometer |
It measures the strength of electromagnetic radiation in the range from ultraviolet to infrared and including the visible spectrum. . |

97 |
Planometer |
It measures area |

98 |
Polarimeter |
It measures the rotation of polarized light |

99 |
Potentiometer |
It measures voltage (the term is also used to refer to a variable resistor) |

100 |
Profilometer |
It measures surface roughness Protractor angles |

101 |
Psychrometer |
It measures humidity |

102 |
Pycnometer |
It measures the fluid density |

103 |
Pyranometer |
It measures solar radiation |

104 |
Pyrheliometer |
It measures direct solar insolation |

105 |
Pyrometer |
It measures a very high temperature. |

106 |
Radar |
It measures the speed and direction of far aircraft. |

107 |
Radiometer |
It measures the emission of radiant energy. |

108 |
Rheometer |
It measures response to applied forces |

109 |
Rain Gauge |
An apparatus for recording rainfall at a particular place. |

110 |
Refractometer |
It measures the refractive index. |

111 |
Rotameter |
It measures the pressure of a liquid or gas in a closed tube |

112 |
Saccharometer |
It measures the amount of sugar in a solution |

113 |
Salinometer |
It determines the salinity of the solution. |

114 |
Seismograph |
It measures the intensity of earthquake shocks. |

115 |
Sextant |
This is used by navigators to find the latitude of a place by measuring the elevation above the horizon of the sun or another star. |

116 |
Spectrometer |
It measuring the energy distribution of a particular type of radiation. |

117 |
Spectrophotometer |
It measures the intensity of light as a function of wavelength |

118 |
Speedometer |
It records the speed of a vehicle. |

119 |
Spherometer |
It measures the curvatures of the surface. |

120 |
Sphygmomanometer |
It measures blood pressure |

121 |
Spirometer |
It measures the lung capacity |

122 |
Stadimeter |
It measures object range |

123 |
Stereoscope |
It is used to view two-dimensional pictures. |

124 |
Stethoscope |
It measures heart and lung sounds. |

125 |
Strainmeter |
It measures seismic strain |

126 |
Stroboscope |
It measures to view rapidly moving objects |

127 |
SWR meter |
It measures the standing wave ratio |

128 |
Tachometer |
This instrument used in measuring the speed of aeroplanes and motorboats. |

129 |
Taximeter |
It measures distance traveled, displacement |

130 |
Telescope |
It views distant objects in space. |

131 |
Tensiometer |
It measures the surface tension of a liquid |

132 |
Theodolite |
It measures horizontal and vertical angles. |

133 |
Thermometer |
It measures temperature |

134 |
Thermostat |
This device regulates the temperature at a particular point. |

135 |
Tiltmeter |
It measures minor changes to the Earth |

136 |
Tintometer |
It measures color Vacuum Gauge very low-pressure Viscometer viscosity of a fluid |

137 |
Viscometer |
It measures the viscosity of liquids. |

138 |
Voltmeter |
It measures the electric potential difference between two points. |

139 |
Watt Meter |
It measures electrical power |

140 |
Wind Vane |
It measures wind direction |

141 |
Zymometer |
It measures fermentation. |

** **

**Q. For what purpose is Oxymeter used?**

Ans-**Oximetry is used to measure the oxygen level (oxygen saturation) of the blood.**

**Q**. **What is used in barometer and thermometer**

Ans-Barometer measures the atmospheric pressure and thermometer measures** the temperature**.

**Q**. **What is voltmeter used for?**

Ans-**Voltmeter measures the electric potential difference between two points.**

**Q**. **Which instrument is used to depth of ocean?**

Ans-Fathometer is used to measure the depth of ocean.