List I contains the three essential features of an analogue indicating instrument. List II contains their function.
| List I | List II | ||
| A | Deflecting device | 1 | To give a deflection dependent upon the magnitude of the quantity being measured |
| B | Controlling device | 2 | To convert the quantity being measured into a mechanical force |
| C | Damping device | 3 | To prevent oscillation of the moving system |
The correct match between the two lists is
| 1 | 2 | 3 | 4 |
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