Instruments 2

Front 1

Manometer

Back 1

Compare pressure of 2 gases

Front 2

Mariners compass

Back 2

Determining the direction.

Front 3

Micrometer

Back 3

Measuring small distances or angles accurately

Front 4

Microphotometer

Back 4

Densitometer used to measure density variation over small area of image on photographic plate

Front 5

Microtome

Back 5

Providing visible images of material for microscopic examination

Front 6

Oscilloscope

Back 6

Provide Visual image of one or more electrical quantities varying w.r.t time or other

Front 7

Photo-electric cell

Back 7

Detecting and measuring light

Front 8

Photometer

Back 8

Compare Luminous intensity of the sources of light

Front 9

Polarimeter

Back 9

measure the angle of rotation caused by passing polarized light through an optically active substance.

Front 10

Potentiometer

Back 10

Potential difference of direct E.M.F

Front 11

Pyknometer

Back 11

density and

co-efficient of expension

of liquid

Front 12

Pyrheliometer

Back 12

Solar radiation

Front 13

Pyrometer

Back 13

Very high temperature

Front 14

Quadrant

Back 14

Altitude and

angles

in navigation and astronomy

Front 15

Quartz clock

Back 15

Highly accurate clock used in astronomical observations and other procession work

Front 16

Radar

Back 16

Radio, angle, direction and range.

Used to detect and pinpoint the location of aircraft

Front 17

Radiator

Back 17

Cooling agent by radiating heat generated by engine

Front 18

Radio-micrometer

Back 18

heat radiation

Front 19

Resistance thermometer

Back 19

Electrical resistance of a conductor

Front 20

Saccharimeter

Back 20

Concentration of sugar solution

Front 21

Salinometer

Back 21

Hydrometer determining concentration of salt solution by measuring their density

Front 22

Seismograph

Back 22

Registering and recording earthquake shocks

Front 23

Sextant

Back 23

Angular distances between 2 objects

Front 24

Spectrometer

Back 24

Spectroscope for precise measurement of refractive index

Front 25

Spectroscope

Back 25

Spectrum analysis

Front 26

Spherometer

Back 26

Accurately measure curvature of spherical objects

Front 27

Sphygmomanometer

Back 27

Apparatus, arterial BP

Front 28

Stereoscope

Back 28

Seen 2 dimension picture as having depth and solidity

Front 29

Stethoscope

Back 29

Hearing and

Analyzing the sounds of lungs and heart

Front 30

Stroboscope

Back 30

Viewing the objects moving rapidly with periodic motion as to see them if they were at rest

Front 31

Tangent galvanometer

Back 31

Strength of direct current

Front 32

Telemeter

Back 32

Apparatus for recording physical events happening at a distance

Front 33

Teleprinter

Back 33

Self recording apparatus for automatically printing the telegraph messages received from distant places

Front 34

Thermocouple

Back 34

Temperature

Front 35

Thermo-milliammeter

Back 35

Small AC

Front 36

Thermophile

Back 36

Measurement and detection of heat radiation

Front 37

Thermostat

Back 37

Automatic, maintaining constant temperature

Front 38

Transformer

Back 38

Change voltage of AC without changing frequency of current

Front 39

Transistor

Back 39

Amplify current

Front 40

Voltameter

Back 40

quantity of electricity

through electrolytic action.

Front 41

Wimshurst machine

Back 41

Generate static current