| Air Cooler: |
An apparatus for cooling the air. Here air is blown through water and atmosphere cooled. |
| Altimeter: |
An instrument used in aircrafts for measuring altitudes |
| Ammeter: |
An instrument used for measuring electric current. |
| Anemometer: |
An instrument to measure the speed and pressure of the wind. |
| Audiometer |
An instrument for measuring intensity of sound |
| Audiophone |
Used for improving imperfect sense of hearing |
| Barograph: |
An instrument which registers automatically the altitude reached by an aeroplane. |
| Barometer: |
An instrument to measure atmospheric conditions and changes. |
| Binocular |
Used to view distant objects |
| Callipers : |
A compass with legs for measuring the inside or outside diameter of bodies. |
| Calorimeter: |
An instrument used for measuring quantities of heat. |
| Carburettor: |
An apparatus for charging air with petrol vapours in an internal combustion engine. |
| Cinematograph: |
An apparatus for projecting pictures on the screen in so rapid a succession that picture seems to be in motion. |
| Crescograph: |
An instrument for recording electrically the response of living matter to various kinds of stimuli. |
| Cardiograph: |
Is a medical instrument for tracing heart movements. |
| Chronometer: |
Is a clock to datermin longitude of a vessel at sea. |
| Cyclotron: |
It is an apparatus for smashing atoms. |
